40023103431 has 4 divisors (see below), whose sum is σ = 53364137912. Its totient is φ = 26682068952.

The previous prime is 40023103411. The next prime is 40023103453. The reversal of 40023103431 is 13430132004.

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

It is not a de Polignac number, because 40023103431 - 2¹⁰ = 40023102407 is a prime.

It is a super-2 number, since 2×40023103431² (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 = 40023103398 and 40023103407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023103411) 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, 6670517236 + ... + 6670517241.

It is an arithmetic number, because the mean of its divisors is an integer number (13341034478).

Almost surely, 2^40023103431 is an apocalyptic number.

40023103431 is a deficient number, since it is larger than the sum of its proper divisors (13341034481).

40023103431 is a wasteful number, since it uses less digits than its factorization.

40023103431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13341034480.

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

Adding to 40023103431 its reverse (13430132004), we get a palindrome (53453235435).

The spelling of 40023103431 in words is "forty billion, twenty-three million, one hundred three thousand, four hundred thirty-one".