655849831131 has 24 divisors (see below), whose sum is σ = 1040396338800. Its totient is φ = 394817054400.

The previous prime is 655849831111. The next prime is 655849831139. The reversal of 655849831131 is 131138948556.

655849831131 is a `hidden beast` number, since 6 + 558 + 4 + 9 + 83 + 1 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 655849831131 - 2⁷ = 655849831003 is a prime.

It is a super-2 number, since 2×655849831131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655849831139) 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, 22215940 + ... + 22245441.

It is an arithmetic number, because the mean of its divisors is an integer number (43349847450).

Almost surely, 2^655849831131 is an apocalyptic number.

655849831131 is a deficient number, since it is larger than the sum of its proper divisors (384546507669).

655849831131 is a wasteful number, since it uses less digits than its factorization.

655849831131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44461547 (or 44461544 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 655849831131 in words is "six hundred fifty-five billion, eight hundred forty-nine million, eight hundred thirty-one thousand, one hundred thirty-one".