913375611531 has 16 divisors (see below), whose sum is σ = 1354459017120. Its totient is φ = 608327591040.

The previous prime is 913375611529. The next prime is 913375611563. The reversal of 913375611531 is 135116573319.

913375611531 is a `hidden beast` number, since 9 + 1 + 3 + 37 + 561 + 1 + 53 + 1 = 666.

It is not a de Polignac number, because 913375611531 - 2¹ = 913375611529 is a prime.

It is a super-2 number, since 2×913375611531² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (913375611931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16346130 + ... + 16401911.

It is an arithmetic number, because the mean of its divisors is an integer number (84653688570).

Almost surely, 2^913375611531 is an apocalyptic number.

913375611531 is a deficient number, since it is larger than the sum of its proper divisors (441083405589).

913375611531 is a wasteful number, since it uses less digits than its factorization.

913375611531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32749083 (or 32749077 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The spelling of 913375611531 in words is "nine hundred thirteen billion, three hundred seventy-five million, six hundred eleven thousand, five hundred thirty-one".