231426121 has 2 divisors, whose sum is σ = 231426122. Its totient is φ = 231426120.

The previous prime is 231426103. The next prime is 231426179. The reversal of 231426121 is 121624132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212110096 + 19316025 = 14564^2 + 4395^2 .

It is a cyclic number.

It is not a de Polignac number, because 231426121 - 2¹¹ = 231424073 is a prime.

It is a super-2 number, since 2×231426121² = 107116098962213282, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231426092 and 231426101.

It is not a weakly prime, because it can be changed into another prime (231426101) 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 as a sum of consecutive naturals, namely, 115713060 + 115713061.

It is an arithmetic number, because the mean of its divisors is an integer number (115713061).

Almost surely, 2^231426121 is an apocalyptic number.

It is an amenable number.

231426121 is a deficient number, since it is larger than the sum of its proper divisors (1).

231426121 is an equidigital number, since it uses as much as digits as its factorization.

231426121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 231426121 is about 15212.6960463949. The cubic root of 231426121 is about 613.9562979290.

The spelling of 231426121 in words is "two hundred thirty-one million, four hundred twenty-six thousand, one hundred twenty-one".