40151331 has 24 divisors (see below), whose sum is σ = 66993264. Its totient is φ = 22901760.

The previous prime is 40151317. The next prime is 40151339. The reversal of 40151331 is 13315104.

It is not a de Polignac number, because 40151331 - 2⁵ = 40151299 is a prime.

It is a super-2 number, since 2×40151331² = 3224258762143122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40151339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10246 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (2791386).

Almost surely, 2^40151331 is an apocalyptic number.

40151331 is a deficient number, since it is larger than the sum of its proper divisors (26841933).

40151331 is a wasteful number, since it uses less digits than its factorization.

40151331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23891 (or 23888 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 40151331 is about 6336.5077921518. The cubic root of 40151331 is about 342.4259338661.

Adding to 40151331 its reverse (13315104), we get a palindrome (53466435).

The spelling of 40151331 in words is "forty million, one hundred fifty-one thousand, three hundred thirty-one".