23131313033 has 4 divisors (see below), whose sum is σ = 23510514948. Its totient is φ = 22752111120.

The previous prime is 23131312991. The next prime is 23131313069. The reversal of 23131313033 is 33031313132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1413985609 + 21717327424 = 37603^2 + 147368^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131313033 - 2⁶ = 23131312969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23131313083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189600866 + ... + 189600987.

It is an arithmetic number, because the mean of its divisors is an integer number (5877628737).

Almost surely, 2^23131313033 is an apocalyptic number.

It is an amenable number.

23131313033 is a deficient number, since it is larger than the sum of its proper divisors (379201915).

23131313033 is an equidigital number, since it uses as much as digits as its factorization.

23131313033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379201914.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 23131313033 its reverse (33031313132), we get a palindrome (56162626165).

Subtracting 23131313033 from its reverse (33031313132), we obtain a palindrome (9900000099).

The spelling of 23131313033 in words is "twenty-three billion, one hundred thirty-one million, three hundred thirteen thousand, thirty-three".