31100001133212 has 72 divisors (see below), whose sum is σ = 85763061536880. Its totient is φ = 9423973278720.

The previous prime is 31100001133141. The next prime is 31100001133213. The reversal of 31100001133212 is 21233110000113.

31100001133212 is a `hidden beast` number, since 311 + 0 + 0 + 0 + 0 + 11 + 332 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100001133213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12965964 + ... + 15176172.

Almost surely, 2^{31100001133212} is an apocalyptic number.

It is an amenable number.

31100001133212 is an abundant number, since it is smaller than the sum of its proper divisors (54663060403668).

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

31100001133212 is a wasteful number, since it uses less digits than its factorization.

31100001133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245763 (or 2245758 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31100001133212 its reverse (21233110000113), we get a palindrome (52333111133325).

It can be divided in two parts, 31100001 and 133212, that added together give a palindrome (31233213).

The spelling of 31100001133212 in words is "thirty-one trillion, one hundred billion, one million, one hundred thirty-three thousand, two hundred twelve".