40131322 has 32 divisors (see below), whose sum is σ = 79470720. Its totient is φ = 14714880.

The previous prime is 40131319. The next prime is 40131323. The reversal of 40131322 is 22313104.

It is a happy number.

It is a super-2 number, since 2×40131322² = 3221046010935368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40131296 and 40131305.

It is not an unprimeable number, because it can be changed into a prime (40131323) 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, 5047 + ... + 10282.

It is an arithmetic number, because the mean of its divisors is an integer number (2483460).

Almost surely, 2^40131322 is an apocalyptic number.

40131322 is a deficient number, since it is larger than the sum of its proper divisors (39339398).

40131322 is a wasteful number, since it uses less digits than its factorization.

40131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15366.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40131322 is about 6334.9287288809. The cubic root of 40131322 is about 342.3690429421.

Adding to 40131322 its reverse (22313104), we get a palindrome (62444426).

It can be divided in two parts, 4013 and 1322, that added together give a palindrome (5335).

The spelling of 40131322 in words is "forty million, one hundred thirty-one thousand, three hundred twenty-two".