723113557 has 4 divisors (see below), whose sum is σ = 723169600. Its totient is φ = 723057516.

The previous prime is 723113551. The next prime is 723113561. The reversal of 723113557 is 755311327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 723113557 - 2³ = 723113549 is a prime.

It is a super-3 number, since 3×723113557³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723113551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194 + ... + 38092.

It is an arithmetic number, because the mean of its divisors is an integer number (180792400).

Almost surely, 2^723113557 is an apocalyptic number.

It is an amenable number.

723113557 is a deficient number, since it is larger than the sum of its proper divisors (56043).

723113557 is a wasteful number, since it uses less digits than its factorization.

723113557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56042.

The product of its digits is 22050, while the sum is 34.

The square root of 723113557 is about 26890.7708517253. The cubic root of 723113557 is about 897.5710460178.

The spelling of 723113557 in words is "seven hundred twenty-three million, one hundred thirteen thousand, five hundred fifty-seven".