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1131311423 = 11161363761
BaseRepresentation
bin100001101101110…
…0111000100111111
32220211202120112002
41003123213010333
54304103431143
6304131532515
740014663014
oct10333470477
92824676462
101131311423
11530661020
12276a5a13b
131504c4858
14aa36d70b
15694bd5b8
hex436e713f

1131311423 has 8 divisors (see below), whose sum is σ = 1234942416. Its totient is φ = 1027811200.

The previous prime is 1131311413. The next prime is 1131311453. The reversal of 1131311423 is 3241131311.

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 1131311423 - 24 = 1131311407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131311395 and 1131311404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131311413) 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, 14138 + ... + 49623.

It is an arithmetic number, because the mean of its divisors is an integer number (154367802).

Almost surely, 21131311423 is an apocalyptic number.

1131311423 is a deficient number, since it is larger than the sum of its proper divisors (103630993).

1131311423 is a wasteful number, since it uses less digits than its factorization.

1131311423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65385.

The product of its digits is 216, while the sum is 20.

The square root of 1131311423 is about 33634.9732124169. The cubic root of 1131311423 is about 1041.9832173841.

Adding to 1131311423 its reverse (3241131311), we get a palindrome (4372442734).

The spelling of 1131311423 in words is "one billion, one hundred thirty-one million, three hundred eleven thousand, four hundred twenty-three".

Divisors: 1 11 1613 17743 63761 701371 102846493 1131311423