31030254457 has 2 divisors, whose sum is σ = 31030254458. Its totient is φ = 31030254456.

The previous prime is 31030254443. The next prime is 31030254487. The reversal of 31030254457 is 75445203013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17837205136 + 13193049321 = 133556^2 + 114861^2 .

It is a cyclic number.

It is not a de Polignac number, because 31030254457 - 2¹⁵ = 31030221689 is a prime.

It is not a weakly prime, because it can be changed into another prime (31030254407) 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, 15515127228 + 15515127229.

It is an arithmetic number, because the mean of its divisors is an integer number (15515127229).

Almost surely, 2^31030254457 is an apocalyptic number.

It is an amenable number.

31030254457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31030254457 is an equidigital number, since it uses as much as digits as its factorization.

31030254457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 34.

The spelling of 31030254457 in words is "thirty-one billion, thirty million, two hundred fifty-four thousand, four hundred fifty-seven".