40512315431 has 8 divisors (see below), whose sum is σ = 46347479424. Its totient is φ = 34689074040.

The previous prime is 40512315419. The next prime is 40512315433. The reversal of 40512315431 is 13451321504.

40512315431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40512315431 is a prime.

It is a super-2 number, since 2×40512315431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40512315394 and 40512315403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40512315433) 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, 2973365 + ... + 2986958.

It is an arithmetic number, because the mean of its divisors is an integer number (5793434928).

Almost surely, 2^40512315431 is an apocalyptic number.

40512315431 is a deficient number, since it is larger than the sum of its proper divisors (5835163993).

40512315431 is an equidigital number, since it uses as much as digits as its factorization.

40512315431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961301.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 40512315431 its reverse (13451321504), we get a palindrome (53963636935).

The spelling of 40512315431 in words is "forty billion, five hundred twelve million, three hundred fifteen thousand, four hundred thirty-one".