231119489 has 2 divisors, whose sum is σ = 231119490. Its totient is φ = 231119488.

The previous prime is 231119429. The next prime is 231119503. The reversal of 231119489 is 984911132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230037889 + 1081600 = 15167^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 231119489 - 2¹² = 231115393 is a prime.

It is a super-2 number, since 2×231119489² = 106832436391242242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231119429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115559744 + 115559745.

It is an arithmetic number, because the mean of its divisors is an integer number (115559745).

Almost surely, 2^231119489 is an apocalyptic number.

It is an amenable number.

231119489 is a deficient number, since it is larger than the sum of its proper divisors (1).

231119489 is an equidigital number, since it uses as much as digits as its factorization.

231119489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The square root of 231119489 is about 15202.6145448735. The cubic root of 231119489 is about 613.6850207809.

The spelling of 231119489 in words is "two hundred thirty-one million, one hundred nineteen thousand, four hundred eighty-nine".