23201311331 has 16 divisors (see below), whose sum is σ = 26649768960. Its totient is φ = 19976654880.

The previous prime is 23201311327. The next prime is 23201311339. The reversal of 23201311331 is 13311310232.

It is a cyclic number.

It is not a de Polignac number, because 23201311331 - 2² = 23201311327 is a prime.

It is a super-2 number, since 2×23201311331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23201311339) 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, 906350 + ... + 931596.

It is an arithmetic number, because the mean of its divisors is an integer number (1665610560).

Almost surely, 2^23201311331 is an apocalyptic number.

23201311331 is a deficient number, since it is larger than the sum of its proper divisors (3448457629).

23201311331 is a wasteful number, since it uses less digits than its factorization.

23201311331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29674.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23201311331 its reverse (13311310232), we get a palindrome (36512621563).

The spelling of 23201311331 in words is "twenty-three billion, two hundred one million, three hundred eleven thousand, three hundred thirty-one".