31213032400101 has 32 divisors (see below), whose sum is σ = 43041291435648. Its totient is φ = 20104995536640.

The previous prime is 31213032400097. The next prime is 31213032400111. The reversal of 31213032400101 is 10100423031213.

It is not a de Polignac number, because 31213032400101 - 2² = 31213032400097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213032400111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10071811 + ... + 12801071.

It is an arithmetic number, because the mean of its divisors is an integer number (1345040357364).

Almost surely, 2^{31213032400101} is an apocalyptic number.

It is an amenable number.

31213032400101 is a deficient number, since it is larger than the sum of its proper divisors (11828259035547).

31213032400101 is a wasteful number, since it uses less digits than its factorization.

31213032400101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730021.

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

Adding to 31213032400101 its reverse (10100423031213), we get a palindrome (41313455431314).

The spelling of 31213032400101 in words is "thirty-one trillion, two hundred thirteen billion, thirty-two million, four hundred thousand, one hundred one".