231040019 has 16 divisors (see below), whose sum is σ = 278484480. Its totient is φ = 187246080.

The previous prime is 231040009. The next prime is 231040027. The reversal of 231040019 is 910040132.

It is a de Polignac number, because none of the positive numbers 2^k-231040019 is a prime.

It is a super-2 number, since 2×231040019² = 106758980759040722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231040009) 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 in 15 ways as a sum of consecutive naturals, for example, 82547 + ... + 85299.

It is an arithmetic number, because the mean of its divisors is an integer number (17405280).

Almost surely, 2^231040019 is an apocalyptic number.

231040019 is a deficient number, since it is larger than the sum of its proper divisors (47444461).

231040019 is a wasteful number, since it uses less digits than its factorization.

231040019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 231040019 is about 15200.0006250000. Note that the first 3 decimals coincide. The cubic root of 231040019 is about 613.6146745721.

The spelling of 231040019 in words is "two hundred thirty-one million, forty thousand, nineteen".