231353069 has 2 divisors, whose sum is σ = 231353070. Its totient is φ = 231353068.

The previous prime is 231353009. The next prime is 231353071. The reversal of 231353069 is 960353132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212080969 + 19272100 = 14563^2 + 4390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231353069 is a prime.

It is a super-2 number, since 2×231353069² = 107048485071437522, which contains 22 as substring.

Together with 231353071, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_12712973 and since 231353069 and 12712973 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231353009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115676534 + 115676535.

It is an arithmetic number, because the mean of its divisors is an integer number (115676535).

Almost surely, 2^231353069 is an apocalyptic number.

It is an amenable number.

231353069 is a deficient number, since it is larger than the sum of its proper divisors (1).

231353069 is an equidigital number, since it uses as much as digits as its factorization.

231353069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 231353069 is about 15210.2948360642. The cubic root of 231353069 is about 613.8916906218.

The spelling of 231353069 in words is "two hundred thirty-one million, three hundred fifty-three thousand, sixty-nine".