31310130002121 has 80 divisors (see below), whose sum is σ = 49706260243200. Its totient is φ = 19585068099552.

The previous prime is 31310130002117. The next prime is 31310130002149. The reversal of 31310130002121 is 12120003101313.

31310130002121 is a `hidden beast` number, since 31 + 310 + 1 + 300 + 0 + 2 + 1 + 21 = 666.

It is not a de Polignac number, because 31310130002121 - 2² = 31310130002117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31310130002094 and 31310130002103.

It is not an unprimeable number, because it can be changed into a prime (31310130052121) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 718446510 + ... + 718490088.

It is an arithmetic number, because the mean of its divisors is an integer number (621328253040).

Almost surely, 2^{31310130002121} is an apocalyptic number.

It is an amenable number.

31310130002121 is a deficient number, since it is larger than the sum of its proper divisors (18396130241079).

31310130002121 is a wasteful number, since it uses less digits than its factorization.

31310130002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48080 (or 48071 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31310130002121 its reverse (12120003101313), we get a palindrome (43430133103434).

The spelling of 31310130002121 in words is "thirty-one trillion, three hundred ten billion, one hundred thirty million, two thousand, one hundred twenty-one".