31210013240013 has 16 divisors (see below), whose sum is σ = 41840345664000. Its totient is φ = 20693267567280.

The previous prime is 31210013240011. The next prime is 31210013240017. The reversal of 31210013240013 is 31004231001213.

It is not a de Polignac number, because 31210013240013 - 2¹ = 31210013240011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210013240011) 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, 9778923 + ... + 12571688.

It is an arithmetic number, because the mean of its divisors is an integer number (2615021604000).

Almost surely, 2^{31210013240013} is an apocalyptic number.

It is an amenable number.

31210013240013 is a deficient number, since it is larger than the sum of its proper divisors (10630332423987).

31210013240013 is a wasteful number, since it uses less digits than its factorization.

31210013240013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22353152.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31210013240013 its reverse (31004231001213), we get a palindrome (62214244241226).

The spelling of 31210013240013 in words is "thirty-one trillion, two hundred ten billion, thirteen million, two hundred forty thousand, thirteen".