23513101531 has 2 divisors, whose sum is σ = 23513101532. Its totient is φ = 23513101530.

The previous prime is 23513101529. The next prime is 23513101537. The reversal of 23513101531 is 13510131532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23513101531 - 2¹ = 23513101529 is a prime.

It is a super-2 number, since 2×23513101531² (a number of 22 digits) contains 22 as substring.

Together with 23513101529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23513101496 and 23513101505.

It is not a weakly prime, because it can be changed into another prime (23513101537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11756550765 + 11756550766.

It is an arithmetic number, because the mean of its divisors is an integer number (11756550766).

Almost surely, 2^23513101531 is an apocalyptic number.

23513101531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23513101531 is an equidigital number, since it uses as much as digits as its factorization.

23513101531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 25.

The spelling of 23513101531 in words is "twenty-three billion, five hundred thirteen million, one hundred one thousand, five hundred thirty-one".