40131513 has 12 divisors (see below), whose sum is σ = 59316400. Its totient is φ = 26131896.

The previous prime is 40131503. The next prime is 40131517. The reversal of 40131513 is 31513104.

It is not a de Polignac number, because 40131513 - 2⁶ = 40131449 is a prime.

It is a super-2 number, since 2×40131513² = 3221076671338338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40131517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51463 + ... + 52236.

Almost surely, 2^40131513 is an apocalyptic number.

40131513 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40131513 is a deficient number, since it is larger than the sum of its proper divisors (19184887).

40131513 is a wasteful number, since it uses less digits than its factorization.

40131513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103748 (or 103745 counting only the distinct ones).

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

The square root of 40131513 is about 6334.9438040128. The cubic root of 40131513 is about 342.3695860954.

Adding to 40131513 its reverse (31513104), we get a palindrome (71644617).

The spelling of 40131513 in words is "forty million, one hundred thirty-one thousand, five hundred thirteen".