23013120321 has 24 divisors (see below), whose sum is σ = 34999461120. Its totient is φ = 14530967136.

The previous prime is 23013120293. The next prime is 23013120343. The reversal of 23013120321 is 12302131032.

23013120321 is a `hidden beast` number, since 2 + 30 + 1 + 312 + 0 + 321 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-23013120321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23013120294 and 23013120303.

It is not an unprimeable number, because it can be changed into a prime (23013140321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778416 + ... + 807438.

It is an arithmetic number, because the mean of its divisors is an integer number (1458310880).

Almost surely, 2^23013120321 is an apocalyptic number.

It is an amenable number.

23013120321 is a deficient number, since it is larger than the sum of its proper divisors (11986340799).

23013120321 is a wasteful number, since it uses less digits than its factorization.

23013120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33685 (or 33682 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23013120321 its reverse (12302131032), we get a palindrome (35315251353).

The spelling of 23013120321 in words is "twenty-three billion, thirteen million, one hundred twenty thousand, three hundred twenty-one".