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2122140431 = 83224311399
BaseRepresentation
bin111111001111101…
…0100101100001111
312110220011220101202
41332133110230033
513321231443211
6550324500115
7103405616225
oct17637245417
95426156352
102122140431
11999990574
124b284a63b
1327a8705c8
14161bb0b15
15c648c53b
hex7e7d4b0f

2122140431 has 8 divisors (see below), whose sum is σ = 2148854400. Its totient is φ = 2095453912.

The previous prime is 2122140389. The next prime is 2122140463. The reversal of 2122140431 is 1340412212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2122140431 - 214 = 2122124047 is a prime.

It is a super-2 number, since 2×21221404312 = 9006960017769731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122143431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180470 + ... + 191868.

It is an arithmetic number, because the mean of its divisors is an integer number (268606800).

Almost surely, 22122140431 is an apocalyptic number.

2122140431 is a deficient number, since it is larger than the sum of its proper divisors (26713969).

2122140431 is a wasteful number, since it uses less digits than its factorization.

2122140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13725.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2122140431 is about 46066.6954642939. The cubic root of 2122140431 is about 1285.0638496235.

Adding to 2122140431 its reverse (1340412212), we get a palindrome (3462552643).

The spelling of 2122140431 in words is "two billion, one hundred twenty-two million, one hundred forty thousand, four hundred thirty-one".

Divisors: 1 83 2243 11399 186169 946117 25567957 2122140431