40023430131 has 4 divisors (see below), whose sum is σ = 53364573512. Its totient is φ = 26682286752.

The previous prime is 40023430129. The next prime is 40023430159. The reversal of 40023430131 is 13103432004.

40023430131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40023430131 - 2¹ = 40023430129 is a prime.

It is a super-2 number, since 2×40023430131² (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 = 40023430098 and 40023430107.

It is not an unprimeable number, because it can be changed into a prime (40023430231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6670571686 + ... + 6670571691.

It is an arithmetic number, because the mean of its divisors is an integer number (13341143378).

Almost surely, 2^40023430131 is an apocalyptic number.

40023430131 is a deficient number, since it is larger than the sum of its proper divisors (13341143381).

40023430131 is a wasteful number, since it uses less digits than its factorization.

40023430131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13341143380.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40023430131 its reverse (13103432004), we get a palindrome (53126862135).

The spelling of 40023430131 in words is "forty billion, twenty-three million, four hundred thirty thousand, one hundred thirty-one".