231043069 has 2 divisors, whose sum is σ = 231043070. Its totient is φ = 231043068.

The previous prime is 231043037. The next prime is 231043121. The reversal of 231043069 is 960340132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141967225 + 89075844 = 11915^2 + 9438^2 .

It is a cyclic number.

It is not a de Polignac number, because 231043069 - 2⁵ = 231043037 is a prime.

It is a super-2 number, since 2×231043069² = 106761799465877522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231043369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115521534 + 115521535.

It is an arithmetic number, because the mean of its divisors is an integer number (115521535).

Almost surely, 2^231043069 is an apocalyptic number.

It is an amenable number.

231043069 is a deficient number, since it is larger than the sum of its proper divisors (1).

231043069 is an equidigital number, since it uses as much as digits as its factorization.

231043069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 231043069 is about 15200.1009536121. The cubic root of 231043069 is about 613.6173747054.

The spelling of 231043069 in words is "two hundred thirty-one million, forty-three thousand, sixty-nine".