1345177331 has 2 divisors, whose sum is σ = 1345177332. Its totient is φ = 1345177330.

The previous prime is 1345177297. The next prime is 1345177349. The reversal of 1345177331 is 1337715431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345177331 is a prime.

It is a super-2 number, since 2×1345177331² = 3619004103672567122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1345177291 and 1345177300.

It is not a weakly prime, because it can be changed into another prime (1345177231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672588665 + 672588666.

It is an arithmetic number, because the mean of its divisors is an integer number (672588666).

Almost surely, 2^1345177331 is an apocalyptic number.

1345177331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345177331 is an equidigital number, since it uses as much as digits as its factorization.

1345177331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 35.

The square root of 1345177331 is about 36676.6592126382. The cubic root of 1345177331 is about 1103.8918152912.

The spelling of 1345177331 in words is "one billion, three hundred forty-five million, one hundred seventy-seven thousand, three hundred thirty-one".