231113669 has 2 divisors, whose sum is σ = 231113670. Its totient is φ = 231113668.

The previous prime is 231113653. The next prime is 231113671. The reversal of 231113669 is 966311132.

231113669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218596225 + 12517444 = 14785^2 + 3538^2 .

It is a cyclic number.

It is not a de Polignac number, because 231113669 - 2⁴ = 231113653 is a prime.

It is a super-2 number, since 2×231113669² = 106827055997283122, which contains 22 as substring.

Together with 231113671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231113639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115556834 + 115556835.

It is an arithmetic number, because the mean of its divisors is an integer number (115556835).

Almost surely, 2^231113669 is an apocalyptic number.

It is an amenable number.

231113669 is a deficient number, since it is larger than the sum of its proper divisors (1).

231113669 is an equidigital number, since it uses as much as digits as its factorization.

231113669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 231113669 is about 15202.4231292252. The cubic root of 231113669 is about 613.6798695107.

The spelling of 231113669 in words is "two hundred thirty-one million, one hundred thirteen thousand, six hundred sixty-nine".