23231021211 has 80 divisors (see below), whose sum is σ = 36492825600. Its totient is φ = 14710248000.

The previous prime is 23231021207. The next prime is 23231021227. The reversal of 23231021211 is 11212013232.

23231021211 is a `hidden beast` number, since 232 + 310 + 2 + 121 + 1 = 666.

It is not a de Polignac number, because 23231021211 - 2² = 23231021207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23231021311) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 35251600 + ... + 35252258.

It is an arithmetic number, because the mean of its divisors is an integer number (456160320).

Almost surely, 2^23231021211 is an apocalyptic number.

23231021211 is a deficient number, since it is larger than the sum of its proper divisors (13261804389).

23231021211 is a wasteful number, since it uses less digits than its factorization.

23231021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23231021211 its reverse (11212013232), we get a palindrome (34443034443).

The spelling of 23231021211 in words is "twenty-three billion, two hundred thirty-one million, twenty-one thousand, two hundred eleven".