231010121223 has 48 divisors (see below), whose sum is σ = 386489665536. Its totient is φ = 130235947200.

The previous prime is 231010121179. The next prime is 231010121269. The reversal of 231010121223 is 322121010132.

231010121223 is a `hidden beast` number, since 2 + 310 + 10 + 121 + 223 = 666.

231010121223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231010121223 - 2⁹ = 231010120711 is a prime.

It is a super-2 number, since 2×231010121223² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231010121196 and 231010121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231010121273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1736586 + ... + 1864872.

It is an arithmetic number, because the mean of its divisors is an integer number (8051868032).

Almost surely, 2^231010121223 is an apocalyptic number.

231010121223 is a deficient number, since it is larger than the sum of its proper divisors (155479544313).

231010121223 is a wasteful number, since it uses less digits than its factorization.

231010121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128684 (or 128681 counting only the distinct ones).

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

Adding to 231010121223 its reverse (322121010132), we get a palindrome (553131131355).

The spelling of 231010121223 in words is "two hundred thirty-one billion, ten million, one hundred twenty-one thousand, two hundred twenty-three".