45691731 has 24 divisors (see below), whose sum is σ = 69189120. Its totient is φ = 29001456.

The previous prime is 45691729. The next prime is 45691739. The reversal of 45691731 is 13719654.

It is not a de Polignac number, because 45691731 - 2¹ = 45691729 is a prime.

It is a super-2 number, since 2×45691731² = 4175468563552722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45691739) 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, 63190 + ... + 63908.

It is an arithmetic number, because the mean of its divisors is an integer number (2882880).

Almost surely, 2^45691731 is an apocalyptic number.

45691731 is a deficient number, since it is larger than the sum of its proper divisors (23497389).

45691731 is a wasteful number, since it uses less digits than its factorization.

45691731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1052 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 45691731 is about 6759.5658884280. The cubic root of 45691731 is about 357.5025992932.

The spelling of 45691731 in words is "forty-five million, six hundred ninety-one thousand, seven hundred thirty-one".