245313031391 has 2 divisors, whose sum is σ = 245313031392. Its totient is φ = 245313031390.

The previous prime is 245313031387. The next prime is 245313031409. The reversal of 245313031391 is 193130313542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245313031391 - 2² = 245313031387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245313031291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122656515695 + 122656515696.

It is an arithmetic number, because the mean of its divisors is an integer number (122656515696).

Almost surely, 2^245313031391 is an apocalyptic number.

245313031391 is a deficient number, since it is larger than the sum of its proper divisors (1).

245313031391 is an equidigital number, since it uses as much as digits as its factorization.

245313031391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 245313031391 in words is "two hundred forty-five billion, three hundred thirteen million, thirty-one thousand, three hundred ninety-one".