40131332 has 6 divisors (see below), whose sum is σ = 70229838. Its totient is φ = 20065664.

The previous prime is 40131323. The next prime is 40131337. The reversal of 40131332 is 23313104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20647936 + 19483396 = 4544^2 + 4414^2 .

It is a super-2 number, since 2×40131332² = 3221047616188448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40131332.

It is not an unprimeable number, because it can be changed into a prime (40131337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5016413 + ... + 5016420.

It is an arithmetic number, because the mean of its divisors is an integer number (11704973).

Almost surely, 2^40131332 is an apocalyptic number.

It is an amenable number.

40131332 is a deficient number, since it is larger than the sum of its proper divisors (30098506).

40131332 is a wasteful number, since it uses less digits than its factorization.

40131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10032837 (or 10032835 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 40131332 is about 6334.9295181557. The cubic root of 40131332 is about 342.3690713795.

Adding to 40131332 its reverse (23313104), we get a palindrome (63444436).

The spelling of 40131332 in words is "forty million, one hundred thirty-one thousand, three hundred thirty-two".