40700731 has 12 divisors (see below), whose sum is σ = 43479072. Its totient is φ = 38079536.

The previous prime is 40700719. The next prime is 40700749. The reversal of 40700731 is 13700704.

It is not a de Polignac number, because 40700731 - 2²³ = 32312123 is a prime.

It is a super-2 number, since 2×40700731² = 3313099007868722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40703731) 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, 24045 + ... + 25681.

It is an arithmetic number, because the mean of its divisors is an integer number (3623256).

Almost surely, 2^40700731 is an apocalyptic number.

40700731 is a deficient number, since it is larger than the sum of its proper divisors (2778341).

40700731 is a wasteful number, since it uses less digits than its factorization.

40700731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1707 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 40700731 is about 6379.7124543352. The cubic root of 40700731 is about 343.9806951263.

The spelling of 40700731 in words is "forty million, seven hundred thousand, seven hundred thirty-one".