31112331213100 has 18 divisors (see below), whose sum is σ = 67513758732644. Its totient is φ = 12444932485200.

The previous prime is 31112331213091. The next prime is 31112331213193. The reversal of 31112331213100 is 131213321113.

It is a super-2 number, since 2×31112331213100² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155561655966 + ... + 155561656165.

Almost surely, 2^{31112331213100} is an apocalyptic number.

It is an amenable number.

31112331213100 is an abundant number, since it is smaller than the sum of its proper divisors (36401427519544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31112331213100 is a wasteful number, since it uses less digits than its factorization.

31112331213100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311123312145 (or 311123312138 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31112331213100 its reverse (131213321113), we get a palindrome (31243544534213).

The spelling of 31112331213100 in words is "thirty-one trillion, one hundred twelve billion, three hundred thirty-one million, two hundred thirteen thousand, one hundred".