40362731 has 8 divisors (see below), whose sum is σ = 41023584. Its totient is φ = 39707200.

The previous prime is 40362727. The next prime is 40362757. The reversal of 40362731 is 13726304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40362731 - 2² = 40362727 is a prime.

It is a super-2 number, since 2×40362731² = 3258300107556722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40362731.

It is not an unprimeable number, because it can be changed into a prime (40362701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15671 + ... + 18063.

It is an arithmetic number, because the mean of its divisors is an integer number (5127948).

Almost surely, 2^40362731 is an apocalyptic number.

40362731 is a deficient number, since it is larger than the sum of its proper divisors (660853).

40362731 is a wasteful number, since it uses less digits than its factorization.

40362731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 40362731 is about 6353.1670055178. The cubic root of 40362731 is about 343.0258489587.

The spelling of 40362731 in words is "forty million, three hundred sixty-two thousand, seven hundred thirty-one".