111162133431 has 32 divisors (see below), whose sum is σ = 165568665600. Its totient is φ = 73711018080.

The previous prime is 111162133417. The next prime is 111162133517. The reversal of 111162133431 is 134331261111.

111162133431 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 621 + 3 + 3 + 4 + 31 = 666.

It is not a de Polignac number, because 111162133431 - 2⁶ = 111162133367 is a prime.

It is a super-4 number, since 4×111162133431⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 111162133395 and 111162133404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111162133231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5714101 + ... + 5733521.

It is an arithmetic number, because the mean of its divisors is an integer number (5174020800).

Almost surely, 2^111162133431 is an apocalyptic number.

111162133431 is a deficient number, since it is larger than the sum of its proper divisors (54406532169).

111162133431 is a wasteful number, since it uses less digits than its factorization.

111162133431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20556 (or 20550 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

Adding to 111162133431 its reverse (134331261111), we get a palindrome (245493394542).

The spelling of 111162133431 in words is "one hundred eleven billion, one hundred sixty-two million, one hundred thirty-three thousand, four hundred thirty-one".