[go: up one dir, main page]

Search a number
-
+
2031054431 = 73711236983
BaseRepresentation
bin111100100001111…
…0110111001011111
312020112210020220012
41321003312321133
513124422220211
6533312313435
7101221451330
oct17103667137
95215706805
102031054431
1195252828a
1248824287b
13264a2b273
14153a60287
15bd498d8b
hex790f6e5f

2031054431 has 16 divisors (see below), whose sum is σ = 2386404864. Its totient is φ = 1692101664.

The previous prime is 2031054407. The next prime is 2031054461. The reversal of 2031054431 is 1344501302.

It is a cyclic number.

It is not a de Polignac number, because 2031054431 - 210 = 2031053407 is a prime.

It is a super-4 number, since 4×20310544314 (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031054397 and 2031054406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031054401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287366 + ... + 294348.

It is an arithmetic number, because the mean of its divisors is an integer number (149150304).

Almost surely, 22031054431 is an apocalyptic number.

2031054431 is a deficient number, since it is larger than the sum of its proper divisors (355350433).

2031054431 is a wasteful number, since it uses less digits than its factorization.

2031054431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8150.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2031054431 is about 45067.2212478205. The cubic root of 2031054431 is about 1266.4086088407.

Adding to 2031054431 its reverse (1344501302), we get a palindrome (3375555733).

The spelling of 2031054431 in words is "two billion, thirty-one million, fifty-four thousand, four hundred thirty-one".

Divisors: 1 7 37 259 1123 6983 7861 41551 48881 258371 290857 1808597 7841909 54893363 290150633 2031054431