245107031791 has 2 divisors, whose sum is σ = 245107031792. Its totient is φ = 245107031790.

The previous prime is 245107031783. The next prime is 245107031797. The reversal of 245107031791 is 197130701542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245107031791 - 2³ = 245107031783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245107031797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122553515895 + 122553515896.

It is an arithmetic number, because the mean of its divisors is an integer number (122553515896).

Almost surely, 2^245107031791 is an apocalyptic number.

245107031791 is a deficient number, since it is larger than the sum of its proper divisors (1).

245107031791 is an equidigital number, since it uses as much as digits as its factorization.

245107031791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 245107031791 in words is "two hundred forty-five billion, one hundred seven million, thirty-one thousand, seven hundred ninety-one".