23021330431 has 8 divisors (see below), whose sum is σ = 25160606928. Its totient is φ = 20889792000.

The previous prime is 23021330413. The next prime is 23021330491. The reversal of 23021330431 is 13403312032.

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

It is not a de Polignac number, because 23021330431 - 2²³ = 23012941823 is a prime.

It is a super-2 number, since 2×23021330431² (a number of 22 digits) 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 (23021330401) 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, 1928290 + ... + 1940191.

It is an arithmetic number, because the mean of its divisors is an integer number (3145075866).

Almost surely, 2^23021330431 is an apocalyptic number.

23021330431 is a deficient number, since it is larger than the sum of its proper divisors (2139276497).

23021330431 is a wasteful number, since it uses less digits than its factorization.

23021330431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869033.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 23021330431 its reverse (13403312032), we get a palindrome (36424642463).

The spelling of 23021330431 in words is "twenty-three billion, twenty-one million, three hundred thirty thousand, four hundred thirty-one".