231463919 has 4 divisors (see below), whose sum is σ = 231803496. Its totient is φ = 231124344.

The previous prime is 231463913. The next prime is 231463931. The reversal of 231463919 is 919364132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231463919 is a prime.

It is a super-2 number, since 2×231463919² = 107151091597677122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231463913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168764 + ... + 170129.

It is an arithmetic number, because the mean of its divisors is an integer number (57950874).

Almost surely, 2^231463919 is an apocalyptic number.

231463919 is a deficient number, since it is larger than the sum of its proper divisors (339577).

231463919 is an equidigital number, since it uses as much as digits as its factorization.

231463919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339576.

The product of its digits is 34992, while the sum is 38.

The square root of 231463919 is about 15213.9383132705. The cubic root of 231463919 is about 613.9897212043.

The spelling of 231463919 in words is "two hundred thirty-one million, four hundred sixty-three thousand, nine hundred nineteen".