61316607231 has 24 divisors (see below), whose sum is σ = 100198635264. Its totient is φ = 37161578520.

The previous prime is 61316607223. The next prime is 61316607239. The reversal of 61316607231 is 13270661316.

61316607231 is a `hidden beast` number, since 6 + 1 + 3 + 16 + 607 + 2 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (61316607223) and next prime (61316607239).

It is not a de Polignac number, because 61316607231 - 2³ = 61316607223 is a prime.

It is a super-2 number, since 2×61316607231² (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 (61316607239) 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, 11466951 + ... + 11472296.

It is an arithmetic number, because the mean of its divisors is an integer number (4174943136).

Almost surely, 2^61316607231 is an apocalyptic number.

61316607231 is a deficient number, since it is larger than the sum of its proper divisors (38882028033).

61316607231 is a wasteful number, since it uses less digits than its factorization.

61316607231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22939273 (or 22939261 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 61316607231 in words is "sixty-one billion, three hundred sixteen million, six hundred seven thousand, two hundred thirty-one".