387361931 has 8 divisors (see below), whose sum is σ = 432404544. Its totient is φ = 343957320.

The previous prime is 387361867. The next prime is 387361939. The reversal of 387361931 is 139163783.

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

It is a cyclic number.

It is not a de Polignac number, because 387361931 - 2⁶ = 387361867 is a prime.

It is a super-2 number, since 2×387361931² = 300098531176097522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (387361939) 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, 409001 + ... + 409946.

It is an arithmetic number, because the mean of its divisors is an integer number (54050568).

Almost surely, 2^387361931 is an apocalyptic number.

387361931 is a deficient number, since it is larger than the sum of its proper divisors (45042613).

387361931 is a wasteful number, since it uses less digits than its factorization.

387361931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819001.

The product of its digits is 81648, while the sum is 41.

The square root of 387361931 is about 19681.5124164786. The cubic root of 387361931 is about 728.9632690800.

The spelling of 387361931 in words is "three hundred eighty-seven million, three hundred sixty-one thousand, nine hundred thirty-one".