40807131 has 8 divisors (see below), whose sum is σ = 54948624. Its totient is φ = 26935200.

The previous prime is 40807127. The next prime is 40807133. The reversal of 40807131 is 13170804.

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

It is not a de Polignac number, because 40807131 - 2² = 40807127 is a prime.

It is a super-2 number, since 2×40807131² = 3330443880902322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40807133) 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, 67036 + ... + 67641.

It is an arithmetic number, because the mean of its divisors is an integer number (6868578).

Almost surely, 2^40807131 is an apocalyptic number.

40807131 is a deficient number, since it is larger than the sum of its proper divisors (14141493).

40807131 is a wasteful number, since it uses less digits than its factorization.

40807131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134781.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 40807131 is about 6388.0459453576. The cubic root of 40807131 is about 344.2801795042.

Adding to 40807131 its reverse (13170804), we get a palindrome (53977935).

It can be divided in two parts, 4080 and 7131, that added together give a palindrome (11211).

The spelling of 40807131 in words is "forty million, eight hundred seven thousand, one hundred thirty-one".