1173393456931 has 2 divisors, whose sum is σ = 1173393456932. Its totient is φ = 1173393456930.

The previous prime is 1173393456923. The next prime is 1173393456979. The reversal of 1173393456931 is 1396543933711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1173393456931 - 2³ = 1173393456923 is a prime.

It is a super-2 number, since 2×1173393456931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1173393406931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586696728465 + 586696728466.

It is an arithmetic number, because the mean of its divisors is an integer number (586696728466).

Almost surely, 2^{1173393456931} is an apocalyptic number.

1173393456931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1173393456931 is an equidigital number, since it uses as much as digits as its factorization.

1173393456931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 55.

The spelling of 1173393456931 in words is "one trillion, one hundred seventy-three billion, three hundred ninety-three million, four hundred fifty-six thousand, nine hundred thirty-one".