31312200112133 has 16 divisors (see below), whose sum is σ = 31795571005440. Its totient is φ = 30832421598144.

The previous prime is 31312200112099. The next prime is 31312200112139. The reversal of 31312200112133 is 33121100221313.

It is a cyclic number.

It is not a de Polignac number, because 31312200112133 - 2⁸ = 31312200111877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31312200112099 and 31312200112108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312200112139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290134460 + ... + 290242362.

It is an arithmetic number, because the mean of its divisors is an integer number (1987223187840).

Almost surely, 2^{31312200112133} is an apocalyptic number.

It is an amenable number.

31312200112133 is a deficient number, since it is larger than the sum of its proper divisors (483370893307).

31312200112133 is a wasteful number, since it uses less digits than its factorization.

31312200112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124508.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31312200112133 its reverse (33121100221313), we get a palindrome (64433300333446).

The spelling of 31312200112133 in words is "thirty-one trillion, three hundred twelve billion, two hundred million, one hundred twelve thousand, one hundred thirty-three".