40031131 has 8 divisors (see below), whose sum is σ = 45968384. Its totient is φ = 34148520.

The previous prime is 40031113. The next prime is 40031171. The reversal of 40031131 is 13113004.

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

It is not a de Polignac number, because 40031131 - 2¹⁷ = 39900059 is a prime.

It is a super-2 number, since 2×40031131² = 3204982898278322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40031171) 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, 12075 + ... + 15028.

It is an arithmetic number, because the mean of its divisors is an integer number (5746048).

Almost surely, 2^40031131 is an apocalyptic number.

40031131 is a deficient number, since it is larger than the sum of its proper divisors (5937253).

40031131 is a wasteful number, since it uses less digits than its factorization.

40031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27321.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 40031131 is about 6327.0159633116. The cubic root of 40031131 is about 342.0838884305.

Adding to 40031131 its reverse (13113004), we get a palindrome (53144135).

The spelling of 40031131 in words is "forty million, thirty-one thousand, one hundred thirty-one".