31465151213 has 2 divisors, whose sum is σ = 31465151214. Its totient is φ = 31465151212.

The previous prime is 31465151209. The next prime is 31465151231. The reversal of 31465151213 is 31215156413.

Together with next prime (31465151231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31393461124 + 71690089 = 177182^2 + 8467^2 .

It is a cyclic number.

It is not a de Polignac number, because 31465151213 - 2² = 31465151209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31465151213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31465151243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15732575606 + 15732575607.

It is an arithmetic number, because the mean of its divisors is an integer number (15732575607).

Almost surely, 2^31465151213 is an apocalyptic number.

It is an amenable number.

31465151213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31465151213 is an equidigital number, since it uses as much as digits as its factorization.

31465151213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The spelling of 31465151213 in words is "thirty-one billion, four hundred sixty-five million, one hundred fifty-one thousand, two hundred thirteen".