381061312 has 28 divisors (see below), whose sum is σ = 762874776. Its totient is φ = 188840960.

The previous prime is 381061301. The next prime is 381061337. The reversal of 381061312 is 213160183.

It is a super-2 number, since 2×381061312² = 290415447006322688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19114 + ... + 33577.

Almost surely, 2^381061312 is an apocalyptic number.

381061312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

381061312 is an abundant number, since it is smaller than the sum of its proper divisors (381813464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381061312 is a wasteful number, since it uses less digits than its factorization.

381061312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52816 (or 52806 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 381061312 is about 19520.7917872201. The cubic root of 381061312 is about 724.9893376157.

The spelling of 381061312 in words is "three hundred eighty-one million, sixty-one thousand, three hundred twelve".