111232402131 has 32 divisors (see below), whose sum is σ = 155400519168. Its totient is φ = 70636924160.

The previous prime is 111232402111. The next prime is 111232402139. The reversal of 111232402131 is 131204232111.

It is a cyclic number.

It is not a de Polignac number, because 111232402131 - 2⁷ = 111232402003 is a prime.

It is a super-2 number, since 2×111232402131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111232402098 and 111232402107.

It is not an unprimeable number, because it can be changed into a prime (111232402139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22527895 + ... + 22532831.

It is an arithmetic number, because the mean of its divisors is an integer number (4856266224).

Almost surely, 2^111232402131 is an apocalyptic number.

111232402131 is a deficient number, since it is larger than the sum of its proper divisors (44168117037).

111232402131 is a wasteful number, since it uses less digits than its factorization.

111232402131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 111232402131 its reverse (131204232111), we get a palindrome (242436634242).

The spelling of 111232402131 in words is "one hundred eleven billion, two hundred thirty-two million, four hundred two thousand, one hundred thirty-one".