381035231 has 4 divisors (see below), whose sum is σ = 386722392. Its totient is φ = 375348072.

The previous prime is 381035191. The next prime is 381035257. The reversal of 381035231 is 132530183.

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-381035231 is a prime.

It is a super-2 number, since 2×381035231² = 290375694526446722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 381035231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381035531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2843480 + ... + 2843613.

It is an arithmetic number, because the mean of its divisors is an integer number (96680598).

Almost surely, 2^381035231 is an apocalyptic number.

381035231 is a deficient number, since it is larger than the sum of its proper divisors (5687161).

381035231 is an equidigital number, since it uses as much as digits as its factorization.

381035231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687160.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 381035231 is about 19520.1237444848. The cubic root of 381035231 is about 724.9727970768.

It can be divided in two parts, 38103 and 5231, that added together give a palindrome (43334).

The spelling of 381035231 in words is "three hundred eighty-one million, thirty-five thousand, two hundred thirty-one".