380871831 has 8 divisors (see below), whose sum is σ = 510945280. Its totient is φ = 252356472.

The previous prime is 380871823. The next prime is 380871847. The reversal of 380871831 is 138178083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 380871831 - 2³ = 380871823 is a prime.

It is a super-2 number, since 2×380871831² = 290126703298585122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 380871831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380871331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388951 + ... + 389928.

It is an arithmetic number, because the mean of its divisors is an integer number (63868160).

Almost surely, 2^380871831 is an apocalyptic number.

380871831 is a deficient number, since it is larger than the sum of its proper divisors (130073449).

380871831 is a wasteful number, since it uses less digits than its factorization.

380871831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779045.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 380871831 is about 19515.9378713912. The cubic root of 380871831 is about 724.8691518120.

The spelling of 380871831 in words is "three hundred eighty million, eight hundred seventy-one thousand, eight hundred thirty-one".