231465739 has 2 divisors, whose sum is σ = 231465740. Its totient is φ = 231465738.

The previous prime is 231465683. The next prime is 231465757. The reversal of 231465739 is 937564132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231465739 - 2¹¹ = 231463691 is a prime.

It is a super-2 number, since 2×231465739² = 107152776661632242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231465769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115732869 + 115732870.

It is an arithmetic number, because the mean of its divisors is an integer number (115732870).

Almost surely, 2^231465739 is an apocalyptic number.

231465739 is a deficient number, since it is larger than the sum of its proper divisors (1).

231465739 is an equidigital number, since it uses as much as digits as its factorization.

231465739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 40.

The square root of 231465739 is about 15213.9981267253. The cubic root of 231465739 is about 613.9913304664.

The spelling of 231465739 in words is "two hundred thirty-one million, four hundred sixty-five thousand, seven hundred thirty-nine".