23020231431 has 4 divisors (see below), whose sum is σ = 30693641912. Its totient is φ = 15346820952.

The previous prime is 23020231393. The next prime is 23020231433. The reversal of 23020231431 is 13413202032.

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

It is not a de Polignac number, because 23020231431 - 2¹¹ = 23020229383 is a prime.

It is a super-2 number, since 2×23020231431² (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 = 23020231398 and 23020231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23020231433) 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, 3836705236 + ... + 3836705241.

It is an arithmetic number, because the mean of its divisors is an integer number (7673410478).

Almost surely, 2^23020231431 is an apocalyptic number.

23020231431 is a deficient number, since it is larger than the sum of its proper divisors (7673410481).

23020231431 is an equidigital number, since it uses as much as digits as its factorization.

23020231431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673410480.

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

Adding to 23020231431 its reverse (13413202032), we get a palindrome (36433433463).

The spelling of 23020231431 in words is "twenty-three billion, twenty million, two hundred thirty-one thousand, four hundred thirty-one".