231161719 has 2 divisors, whose sum is σ = 231161720. Its totient is φ = 231161718.

The previous prime is 231161701. The next prime is 231161737. The reversal of 231161719 is 917161132.

It is a balanced prime because it is at equal distance from previous prime (231161701) and next prime (231161737).

It is a cyclic number.

It is not a de Polignac number, because 231161719 - 2⁹ = 231161207 is a prime.

It is a super-2 number, since 2×231161719² = 106871480662069922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231161759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115580859 + 115580860.

It is an arithmetic number, because the mean of its divisors is an integer number (115580860).

Almost surely, 2^231161719 is an apocalyptic number.

231161719 is a deficient number, since it is larger than the sum of its proper divisors (1).

231161719 is an equidigital number, since it uses as much as digits as its factorization.

231161719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 31.

The square root of 231161719 is about 15204.0033872661. The cubic root of 231161719 is about 613.7223958781.

The spelling of 231161719 in words is "two hundred thirty-one million, one hundred sixty-one thousand, seven hundred nineteen".