73131723 has 24 divisors (see below), whose sum is σ = 121092608. Its totient is φ = 41662512.

The previous prime is 73131701. The next prime is 73131727. The reversal of 73131723 is 32713137.

It is not a de Polignac number, because 73131723 - 2¹⁰ = 73130699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73131727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21540 + ... + 24702.

Almost surely, 2^73131723 is an apocalyptic number.

73131723 is a deficient number, since it is larger than the sum of its proper divisors (47960885).

73131723 is a wasteful number, since it uses less digits than its factorization.

73131723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 3540 counting only the distinct ones).

The product of its digits is 2646, while the sum is 27.

The square root of 73131723 is about 8551.7087766130. The cubic root of 73131723 is about 418.1851453493.

The spelling of 73131723 in words is "seventy-three million, one hundred thirty-one thousand, seven hundred twenty-three".