40294031 has 4 divisors (see below), whose sum is σ = 40404192. Its totient is φ = 40183872.

The previous prime is 40294027. The next prime is 40294043. The reversal of 40294031 is 13049204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40294031 - 2² = 40294027 is a prime.

It is a super-2 number, since 2×40294031² = 3247217868457922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40293988 and 40294006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40294061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54530 + ... + 55263.

It is an arithmetic number, because the mean of its divisors is an integer number (10101048).

Almost surely, 2^40294031 is an apocalyptic number.

40294031 is a deficient number, since it is larger than the sum of its proper divisors (110161).

40294031 is a wasteful number, since it uses less digits than its factorization.

40294031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110160.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40294031 is about 6347.7579506468. The cubic root of 40294031 is about 342.8311209831.

The spelling of 40294031 in words is "forty million, two hundred ninety-four thousand, thirty-one".