31311012133133 has 16 divisors (see below), whose sum is σ = 33035846173440. Its totient is φ = 29593938124800.

The previous prime is 31311012133117. The next prime is 31311012133187. The reversal of 31311012133133 is 33133121011313.

It is a cyclic number.

It is not a de Polignac number, because 31311012133133 - 2⁴ = 31311012133117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311012133103) 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, 14805068 + ... + 16787258.

It is an arithmetic number, because the mean of its divisors is an integer number (2064740385840).

Almost surely, 2^{31311012133133} is an apocalyptic number.

It is an amenable number.

31311012133133 is a deficient number, since it is larger than the sum of its proper divisors (1724834040307).

31311012133133 is a wasteful number, since it uses less digits than its factorization.

31311012133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984148.

The product of its (nonzero) digits is 1458, while the sum is 26.

Adding to 31311012133133 its reverse (33133121011313), we get a palindrome (64444133144446).

The spelling of 31311012133133 in words is "thirty-one trillion, three hundred eleven billion, twelve million, one hundred thirty-three thousand, one hundred thirty-three".