1345683431 has 2 divisors, whose sum is σ = 1345683432. Its totient is φ = 1345683430.

The previous prime is 1345683403. The next prime is 1345683457. The reversal of 1345683431 is 1343865431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345683431 is a prime.

It is a super-2 number, since 2×1345683431² = 3621727792935863522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345683401) 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, 672841715 + 672841716.

It is an arithmetic number, because the mean of its divisors is an integer number (672841716).

Almost surely, 2^1345683431 is an apocalyptic number.

1345683431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345683431 is an equidigital number, since it uses as much as digits as its factorization.

1345683431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 1345683431 is about 36683.5580471688. The cubic root of 1345683431 is about 1104.0302380812.

The spelling of 1345683431 in words is "one billion, three hundred forty-five million, six hundred eighty-three thousand, four hundred thirty-one".