40513031 has 8 divisors (see below), whose sum is σ = 43893024. Its totient is φ = 37170720.

The previous prime is 40513027. The next prime is 40513061. The reversal of 40513031 is 13031504.

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

It is a cyclic number.

It is not a de Polignac number, because 40513031 - 2² = 40513027 is a prime.

It is a super-2 number, since 2×40513031² = 3282611361613922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40513061) 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, 7160 + ... + 11501.

It is an arithmetic number, because the mean of its divisors is an integer number (5486628).

Almost surely, 2^40513031 is an apocalyptic number.

40513031 is a deficient number, since it is larger than the sum of its proper divisors (3379993).

40513031 is a wasteful number, since it uses less digits than its factorization.

40513031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18841.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 40513031 is about 6364.9847603902. The cubic root of 40513031 is about 343.4511003505.

Adding to 40513031 its reverse (13031504), we get a palindrome (53544535).

The spelling of 40513031 in words is "forty million, five hundred thirteen thousand, thirty-one".