385235231 has 12 divisors (see below), whose sum is σ = 397449360. Its totient is φ = 373386240.

The previous prime is 385235219. The next prime is 385235239. The reversal of 385235231 is 132532583.

It is not a de Polignac number, because 385235231 - 2²² = 381040927 is a prime.

It is a super-2 number, since 2×385235231² = 296812366407246722, 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 (385235239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 600671 + ... + 601311.

It is an arithmetic number, because the mean of its divisors is an integer number (33120780).

Almost surely, 2^385235231 is an apocalyptic number.

385235231 is a deficient number, since it is larger than the sum of its proper divisors (12214129).

385235231 is an equidigital number, since it uses as much as digits as its factorization.

385235231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1117 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 385235231 is about 19627.4101959479. The cubic root of 385235231 is about 727.6267653437.

The spelling of 385235231 in words is "three hundred eighty-five million, two hundred thirty-five thousand, two hundred thirty-one".