1913097031 has 2 divisors, whose sum is σ = 1913097032. Its totient is φ = 1913097030.

The previous prime is 1913097019. The next prime is 1913097089. The reversal of 1913097031 is 1307903191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1913097031 - 2⁹ = 1913096519 is a prime.

It is a super-2 number, since 2×1913097031² = 7319880500042029922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913097001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956548515 + 956548516.

It is an arithmetic number, because the mean of its divisors is an integer number (956548516).

Almost surely, 2^1913097031 is an apocalyptic number.

1913097031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913097031 is an equidigital number, since it uses as much as digits as its factorization.

1913097031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 1913097031 is about 43738.9646768188. The cubic root of 1913097031 is about 1241.4016908220.

The spelling of 1913097031 in words is "one billion, nine hundred thirteen million, ninety-seven thousand, thirty-one".