231690419 has 2 divisors, whose sum is σ = 231690420. Its totient is φ = 231690418.

The previous prime is 231690413. The next prime is 231690443. The reversal of 231690419 is 914096132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231690419 - 2²⁴ = 214913203 is a prime.

It is a super-2 number, since 2×231690419² = 107360900512791122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231690413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115845209 + 115845210.

It is an arithmetic number, because the mean of its divisors is an integer number (115845210).

Almost surely, 2^231690419 is an apocalyptic number.

231690419 is a deficient number, since it is larger than the sum of its proper divisors (1).

231690419 is an equidigital number, since it uses as much as digits as its factorization.

231690419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 231690419 is about 15221.3803250559. The cubic root of 231690419 is about 614.1899299957.

The spelling of 231690419 in words is "two hundred thirty-one million, six hundred ninety thousand, four hundred nineteen".