1345057723 has 8 divisors (see below), whose sum is σ = 1353111200. Its totient is φ = 1337015808.

The previous prime is 1345057699. The next prime is 1345057771. The reversal of 1345057723 is 3277505431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345057723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345057783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360793 + ... + 364501.

It is an arithmetic number, because the mean of its divisors is an integer number (169138900).

Almost surely, 2^1345057723 is an apocalyptic number.

1345057723 is a deficient number, since it is larger than the sum of its proper divisors (8053477).

1345057723 is a wasteful number, since it uses less digits than its factorization.

1345057723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 1345057723 is about 36675.0286025792. The cubic root of 1345057723 is about 1103.8590963818.

The spelling of 1345057723 in words is "one billion, three hundred forty-five million, fifty-seven thousand, seven hundred twenty-three".