31210130377 has 2 divisors, whose sum is σ = 31210130378. Its totient is φ = 31210130376.

The previous prime is 31210130297. The next prime is 31210130381. The reversal of 31210130377 is 77303101213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30721676176 + 488454201 = 175276^2 + 22101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31210130377 is a prime.

It is not a weakly prime, because it can be changed into another prime (31210139377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605065188 + 15605065189.

It is an arithmetic number, because the mean of its divisors is an integer number (15605065189).

Almost surely, 2^31210130377 is an apocalyptic number.

It is an amenable number.

31210130377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31210130377 is an equidigital number, since it uses as much as digits as its factorization.

31210130377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 28.

The spelling of 31210130377 in words is "thirty-one billion, two hundred ten million, one hundred thirty thousand, three hundred seventy-seven".