381107331 has 12 divisors (see below), whose sum is σ = 600532920. Its totient is φ = 230974080.

The previous prime is 381107329. The next prime is 381107359. The reversal of 381107331 is 133701183.

It is not a de Polignac number, because 381107331 - 2¹ = 381107329 is a prime.

It is a super-2 number, since 2×381107331² = 290485595483887122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 381107295 and 381107304.

It is not an unprimeable number, because it can be changed into a prime (381107371) 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, 1924686 + ... + 1924883.

It is an arithmetic number, because the mean of its divisors is an integer number (50044410).

Almost surely, 2^381107331 is an apocalyptic number.

381107331 is a deficient number, since it is larger than the sum of its proper divisors (219425589).

381107331 is a wasteful number, since it uses less digits than its factorization.

381107331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849586 (or 3849583 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 381107331 is about 19521.9704691919. The cubic root of 381107331 is about 725.0185209696.

The spelling of 381107331 in words is "three hundred eighty-one million, one hundred seven thousand, three hundred thirty-one".