23431532407 has 4 divisors (see below), whose sum is σ = 23431863816. Its totient is φ = 23431201000.

The previous prime is 23431532401. The next prime is 23431532459. The reversal of 23431532407 is 70423513432.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23431532407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431532401) 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, 12328 + ... + 216829.

It is an arithmetic number, because the mean of its divisors is an integer number (5857965954).

Almost surely, 2^23431532407 is an apocalyptic number.

23431532407 is a deficient number, since it is larger than the sum of its proper divisors (331409).

23431532407 is a wasteful number, since it uses less digits than its factorization.

23431532407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331408.

The product of its (nonzero) digits is 60480, while the sum is 34.

The spelling of 23431532407 in words is "twenty-three billion, four hundred thirty-one million, five hundred thirty-two thousand, four hundred seven".