31112011232 has 24 divisors (see below), whose sum is σ = 61293168216. Its totient is φ = 15545492352.

The previous prime is 31112011213. The next prime is 31112011237. The reversal of 31112011232 is 23211021113.

It is a self number, because there is not a number n which added to its sum of digits gives 31112011232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112011237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280343 + ... + 375254.

It is an arithmetic number, because the mean of its divisors is an integer number (2553882009).

Almost surely, 2^31112011232 is an apocalyptic number.

31112011232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31112011232 is a deficient number, since it is larger than the sum of its proper divisors (30181156984).

31112011232 is a wasteful number, since it uses less digits than its factorization.

31112011232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657090 (or 657082 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31112011232 its reverse (23211021113), we get a palindrome (54323032345).

The spelling of 31112011232 in words is "thirty-one billion, one hundred twelve million, eleven thousand, two hundred thirty-two".