31212332131369 has 2 divisors, whose sum is σ = 31212332131370. Its totient is φ = 31212332131368.

The previous prime is 31212332131289. The next prime is 31212332131373. The reversal of 31212332131369 is 96313123321213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28789266306969 + 2423065824400 = 5365563^2 + 1556620^2 .

It is a cyclic number.

It is not a de Polignac number, because 31212332131369 - 2⁷ = 31212332131241 is a prime.

It is a super-2 number, since 2×31212332131369² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31212332131769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606166065684 + 15606166065685.

It is an arithmetic number, because the mean of its divisors is an integer number (15606166065685).

Almost surely, 2^{31212332131369} is an apocalyptic number.

It is an amenable number.

31212332131369 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212332131369 is an equidigital number, since it uses as much as digits as its factorization.

31212332131369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 40.

The spelling of 31212332131369 in words is "thirty-one trillion, two hundred twelve billion, three hundred thirty-two million, one hundred thirty-one thousand, three hundred sixty-nine".