381000231 has 12 divisors (see below), whose sum is σ = 569311080. Its totient is φ = 245241360.

The previous prime is 381000227. The next prime is 381000239. The reversal of 381000231 is 132000183.

It is not a de Polignac number, because 381000231 - 2² = 381000227 is a prime.

It is a super-2 number, since 2×381000231² = 290322352044106722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381000239) 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, 729625 + ... + 730146.

It is an arithmetic number, because the mean of its divisors is an integer number (47442590).

Almost surely, 2^381000231 is an apocalyptic number.

381000231 is a deficient number, since it is larger than the sum of its proper divisors (188310849).

381000231 is a wasteful number, since it uses less digits than its factorization.

381000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459806 (or 1459803 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 381000231 is about 19519.2272131865. The cubic root of 381000231 is about 724.9505989328.

The spelling of 381000231 in words is "three hundred eighty-one million, two hundred thirty-one", and thus it is an aban number.