23443431313 has 4 divisors (see below), whose sum is σ = 23480584768. Its totient is φ = 23406277860.

The previous prime is 23443431301. The next prime is 23443431337. The reversal of 23443431313 is 31313434432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23443431313 - 2²⁵ = 23409876881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23443431013) 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, 18575781 + ... + 18577042.

It is an arithmetic number, because the mean of its divisors is an integer number (5870146192).

Almost surely, 2^23443431313 is an apocalyptic number.

It is an amenable number.

23443431313 is a deficient number, since it is larger than the sum of its proper divisors (37153455).

23443431313 is an equidigital number, since it uses as much as digits as its factorization.

23443431313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37153454.

The product of its digits is 31104, while the sum is 31.

Adding to 23443431313 its reverse (31313434432), we get a palindrome (54756865745).

The spelling of 23443431313 in words is "twenty-three billion, four hundred forty-three million, four hundred thirty-one thousand, three hundred thirteen".