23132012321 has 4 divisors (see below), whose sum is σ = 25234922544. Its totient is φ = 21029102100.

The previous prime is 23132012311. The next prime is 23132012377. The reversal of 23132012321 is 12321023132.

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 23132012321 - 2⁶ = 23132012257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23132012293 and 23132012302.

It is not an unprimeable number, because it can be changed into a prime (23132012311) 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, 1051455095 + ... + 1051455116.

It is an arithmetic number, because the mean of its divisors is an integer number (6308730636).

Almost surely, 2^23132012321 is an apocalyptic number.

It is an amenable number.

23132012321 is a deficient number, since it is larger than the sum of its proper divisors (2102910223).

23132012321 is a wasteful number, since it uses less digits than its factorization.

23132012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102910222.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23132012321 its reverse (12321023132), we get a palindrome (35453035453).

The spelling of 23132012321 in words is "twenty-three billion, one hundred thirty-two million, twelve thousand, three hundred twenty-one".