31020102131201 has 2 divisors, whose sum is σ = 31020102131202. Its totient is φ = 31020102131200.

The previous prime is 31020102131177. The next prime is 31020102131243. The reversal of 31020102131201 is 10213120102013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17542568908225 + 13477533222976 = 4188385^2 + 3671176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31020102131201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31020102131201.

It is not a weakly prime, because it can be changed into another prime (31020102131281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510051065600 + 15510051065601.

It is an arithmetic number, because the mean of its divisors is an integer number (15510051065601).

Almost surely, 2^{31020102131201} is an apocalyptic number.

It is an amenable number.

31020102131201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020102131201 is an equidigital number, since it uses as much as digits as its factorization.

31020102131201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31020102131201 its reverse (10213120102013), we get a palindrome (41233222233214).

The spelling of 31020102131201 in words is "thirty-one trillion, twenty billion, one hundred two million, one hundred thirty-one thousand, two hundred one".