231030023121 has 32 divisors (see below), whose sum is σ = 354189143040. Its totient is φ = 148679712000.

The previous prime is 231030023113. The next prime is 231030023131. The reversal of 231030023121 is 121320030132.

231030023121 is a `hidden beast` number, since 2 + 310 + 300 + 2 + 31 + 21 = 666.

It is not a de Polignac number, because 231030023121 - 2³ = 231030023113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231030023094 and 231030023103.

It is not an unprimeable number, because it can be changed into a prime (231030023131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8530 + ... + 679803.

It is an arithmetic number, because the mean of its divisors is an integer number (11068410720).

Almost surely, 2^231030023121 is an apocalyptic number.

It is an amenable number.

231030023121 is a deficient number, since it is larger than the sum of its proper divisors (123159119919).

231030023121 is a wasteful number, since it uses less digits than its factorization.

231030023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688774 (or 688768 counting only the distinct ones).

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

Adding to 231030023121 its reverse (121320030132), we get a palindrome (352350053253).

The spelling of 231030023121 in words is "two hundred thirty-one billion, thirty million, twenty-three thousand, one hundred twenty-one".