23021133231 has 8 divisors (see below), whose sum is σ = 31685000704. Its totient is φ = 14852343960.

The previous prime is 23021133227. The next prime is 23021133263. The reversal of 23021133231 is 13233112032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23021133231 - 2² = 23021133227 is a prime.

It is a super-2 number, since 2×23021133231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23021133198 and 23021133207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021133211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123769441 + ... + 123769626.

It is an arithmetic number, because the mean of its divisors is an integer number (3960625088).

Almost surely, 2^23021133231 is an apocalyptic number.

23021133231 is a deficient number, since it is larger than the sum of its proper divisors (8663867473).

23021133231 is a wasteful number, since it uses less digits than its factorization.

23021133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247539101.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23021133231 its reverse (13233112032), we get a palindrome (36254245263).

The spelling of 23021133231 in words is "twenty-three billion, twenty-one million, one hundred thirty-three thousand, two hundred thirty-one".