31312143433027 has 2 divisors, whose sum is σ = 31312143433028. Its totient is φ = 31312143433026.

The previous prime is 31312143432931. The next prime is 31312143433057. The reversal of 31312143433027 is 72033434121313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31312143433027 is a prime.

It is not a weakly prime, because it can be changed into another prime (31312143433057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656071716513 + 15656071716514.

It is an arithmetic number, because the mean of its divisors is an integer number (15656071716514).

Almost surely, 2^{31312143433027} is an apocalyptic number.

31312143433027 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312143433027 is an equidigital number, since it uses as much as digits as its factorization.

31312143433027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 37.

The spelling of 31312143433027 in words is "thirty-one trillion, three hundred twelve billion, one hundred forty-three million, four hundred thirty-three thousand, twenty-seven".