231413121 has 12 divisors (see below), whose sum is σ = 335765248. Its totient is φ = 153582264.

The previous prime is 231413111. The next prime is 231413123. The reversal of 231413121 is 121314132.

231413121 is a `hidden beast` number, since 231 + 413 + 1 + 21 = 666.

It is not a de Polignac number, because 231413121 - 2⁵ = 231413089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231413094 and 231413103.

It is not an unprimeable number, because it can be changed into a prime (231413123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55645 + ... + 59658.

Almost surely, 2^231413121 is an apocalyptic number.

It is an amenable number.

231413121 is a deficient number, since it is larger than the sum of its proper divisors (104352127).

231413121 is a wasteful number, since it uses less digits than its factorization.

231413121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115532 (or 115529 counting only the distinct ones).

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

The square root of 231413121 is about 15212.2687657036. The cubic root of 231413121 is about 613.9448017025.

Adding to 231413121 its reverse (121314132), we get a palindrome (352727253).

It can be divided in two parts, 23141 and 3121, that added together give a palindrome (26262).

The spelling of 231413121 in words is "two hundred thirty-one million, four hundred thirteen thousand, one hundred twenty-one".