23261240989 has 4 divisors (see below), whose sum is σ = 26584275424. Its totient is φ = 19938206556.

The previous prime is 23261240983. The next prime is 23261241013. The reversal of 23261240989 is 98904216232.

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 23261240989 - 2⁹ = 23261240477 is a prime.

It is a super-3 number, since 3×23261240989³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23261240983) 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, 1661517207 + ... + 1661517220.

It is an arithmetic number, because the mean of its divisors is an integer number (6646068856).

Almost surely, 2^23261240989 is an apocalyptic number.

It is an amenable number.

23261240989 is a deficient number, since it is larger than the sum of its proper divisors (3323034435).

23261240989 is an equidigital number, since it uses as much as digits as its factorization.

23261240989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323034434.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 23261240989 in words is "twenty-three billion, two hundred sixty-one million, two hundred forty thousand, nine hundred eighty-nine".