31023050987 has 2 divisors, whose sum is σ = 31023050988. Its totient is φ = 31023050986.

The previous prime is 31023050959. The next prime is 31023051067. The reversal of 31023050987 is 78905032013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31023050987 - 2⁸ = 31023050731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023050987.

It is not a weakly prime, because it can be changed into another prime (31023058987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511525493 + 15511525494.

It is an arithmetic number, because the mean of its divisors is an integer number (15511525494).

Almost surely, 2^31023050987 is an apocalyptic number.

31023050987 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023050987 is an equidigital number, since it uses as much as digits as its factorization.

31023050987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 31023050987 in words is "thirty-one billion, twenty-three million, fifty thousand, nine hundred eighty-seven".