31042612387 has 2 divisors, whose sum is σ = 31042612388. Its totient is φ = 31042612386.

The previous prime is 31042612369. The next prime is 31042612397. The reversal of 31042612387 is 78321624013.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31042612387 - 2³¹ = 28895128739 is a prime.

It is not a weakly prime, because it can be changed into another prime (31042612397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15521306193 + 15521306194.

It is an arithmetic number, because the mean of its divisors is an integer number (15521306194).

Almost surely, 2^31042612387 is an apocalyptic number.

31042612387 is a deficient number, since it is larger than the sum of its proper divisors (1).

31042612387 is an equidigital number, since it uses as much as digits as its factorization.

31042612387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 31042612387 in words is "thirty-one billion, forty-two million, six hundred twelve thousand, three hundred eighty-seven".