31323615204101 has 16 divisors (see below), whose sum is σ = 34995595487616. Its totient is φ = 27796973400000.

The previous prime is 31323615204043. The next prime is 31323615204113. The reversal of 31323615204101 is 10140251632313.

It is a cyclic number.

It is not a de Polignac number, because 31323615204101 - 2³⁸ = 31048737297157 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 (31323615204121) 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, 198470930 + ... + 198628691.

It is an arithmetic number, because the mean of its divisors is an integer number (2187224717976).

Almost surely, 2^{31323615204101} is an apocalyptic number.

It is an amenable number.

31323615204101 is a deficient number, since it is larger than the sum of its proper divisors (3671980283515).

31323615204101 is a wasteful number, since it uses less digits than its factorization.

31323615204101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397099804.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 31323615204101 its reverse (10140251632313), we get a palindrome (41463866836414).

The spelling of 31323615204101 in words is "thirty-one trillion, three hundred twenty-three billion, six hundred fifteen million, two hundred four thousand, one hundred one".