23207132421 has 16 divisors (see below), whose sum is σ = 37506477120. Its totient is φ = 14064928560.

The previous prime is 23207132407. The next prime is 23207132423. The reversal of 23207132421 is 12423170232.

23207132421 is a `hidden beast` number, since 2 + 3 + 207 + 1 + 32 + 421 = 666.

It is not a de Polignac number, because 23207132421 - 2¹⁸ = 23206870277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23207132423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39068950 + ... + 39069543.

It is an arithmetic number, because the mean of its divisors is an integer number (2344154820).

Almost surely, 2^23207132421 is an apocalyptic number.

It is an amenable number.

23207132421 is a deficient number, since it is larger than the sum of its proper divisors (14299344699).

23207132421 is a wasteful number, since it uses less digits than its factorization.

23207132421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78138513 (or 78138507 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The spelling of 23207132421 in words is "twenty-three billion, two hundred seven million, one hundred thirty-two thousand, four hundred twenty-one".