65723735231 has 12 divisors (see below), whose sum is σ = 83404518120. Its totient is φ = 51213299760.

The previous prime is 65723735191. The next prime is 65723735239. The reversal of 65723735231 is 13253732756.

It is not a de Polignac number, because 65723735231 - 2¹⁰ = 65723734207 is a prime.

It is a super-2 number, since 2×65723735231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65723735239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60967676 + ... + 60968753.

It is an arithmetic number, because the mean of its divisors is an integer number (6950376510).

Almost surely, 2^65723735231 is an apocalyptic number.

65723735231 is a deficient number, since it is larger than the sum of its proper divisors (17680782889).

65723735231 is a wasteful number, since it uses less digits than its factorization.

65723735231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121936454 (or 121936447 counting only the distinct ones).

The product of its digits is 793800, while the sum is 44.

The spelling of 65723735231 in words is "sixty-five billion, seven hundred twenty-three million, seven hundred thirty-five thousand, two hundred thirty-one".