23531048621 has 4 divisors (see below), whose sum is σ = 23565501792. Its totient is φ = 23496595452.

The previous prime is 23531048599. The next prime is 23531048657. The reversal of 23531048621 is 12684013532.

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 23531048621 - 2¹⁰ = 23531047597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23531048521) 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, 17225561 + ... + 17226926.

It is an arithmetic number, because the mean of its divisors is an integer number (5891375448).

Almost surely, 2^23531048621 is an apocalyptic number.

It is an amenable number.

23531048621 is a deficient number, since it is larger than the sum of its proper divisors (34453171).

23531048621 is an equidigital number, since it uses as much as digits as its factorization.

23531048621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34453170.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 23531048621 in words is "twenty-three billion, five hundred thirty-one million, forty-eight thousand, six hundred twenty-one".