1345901723 has 2 divisors, whose sum is σ = 1345901724. Its totient is φ = 1345901722.

The previous prime is 1345901681. The next prime is 1345901759. The reversal of 1345901723 is 3271095431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1345901723 - 2²⁴ = 1329124507 is a prime.

It is a super-2 number, since 2×1345901723² = 3622902895948737458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1345901023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672950861 + 672950862.

It is an arithmetic number, because the mean of its divisors is an integer number (672950862).

Almost surely, 2^1345901723 is an apocalyptic number.

1345901723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345901723 is an equidigital number, since it uses as much as digits as its factorization.

1345901723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 1345901723 is about 36686.5332649461. The cubic root of 1345901723 is about 1104.0899321452.

The spelling of 1345901723 in words is "one billion, three hundred forty-five million, nine hundred one thousand, seven hundred twenty-three".