40615131 has 4 divisors (see below), whose sum is σ = 54153512. Its totient is φ = 27076752.

The previous prime is 40615123. The next prime is 40615139. The reversal of 40615131 is 13151604.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40615123) and next prime (40615139).

It is not a de Polignac number, because 40615131 - 2³ = 40615123 is a prime.

It is a super-2 number, since 2×40615131² = 3299177732294322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40615098 and 40615107.

It is not an unprimeable number, because it can be changed into a prime (40615139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6769186 + ... + 6769191.

It is an arithmetic number, because the mean of its divisors is an integer number (13538378).

Almost surely, 2^40615131 is an apocalyptic number.

40615131 is a deficient number, since it is larger than the sum of its proper divisors (13538381).

40615131 is a wasteful number, since it uses less digits than its factorization.

40615131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13538380.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 40615131 is about 6373.0001569120. Note that the first 3 decimals coincide. The cubic root of 40615131 is about 343.7393774789.

Adding to 40615131 its reverse (13151604), we get a palindrome (53766735).

The spelling of 40615131 in words is "forty million, six hundred fifteen thousand, one hundred thirty-one".