23315506261 has 4 divisors (see below), whose sum is σ = 23315861932. Its totient is φ = 23315150592.

The previous prime is 23315506241. The next prime is 23315506267. The reversal of 23315506261 is 16260551332.

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 8751602500 + 14563903761 = 93550^2 + 120681^2 .

It is a cyclic number.

It is not a de Polignac number, because 23315506261 - 2⁷ = 23315506133 is a prime.

It is a super-2 number, since 2×23315506261² (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 (23315506267) 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, 47820 + ... + 221173.

It is an arithmetic number, because the mean of its divisors is an integer number (5828965483).

Almost surely, 2^23315506261 is an apocalyptic number.

It is an amenable number.

23315506261 is a deficient number, since it is larger than the sum of its proper divisors (355671).

23315506261 is an equidigital number, since it uses as much as digits as its factorization.

23315506261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355670.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 23315506261 in words is "twenty-three billion, three hundred fifteen million, five hundred six thousand, two hundred sixty-one".