386087631 has 4 divisors (see below), whose sum is σ = 514783512. Its totient is φ = 257391752.

The previous prime is 386087623. The next prime is 386087633. The reversal of 386087631 is 136780683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 386087631 - 2³ = 386087623 is a prime.

It is a super-2 number, since 2×386087631² = 298127317622384322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386087633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64347936 + ... + 64347941.

It is an arithmetic number, because the mean of its divisors is an integer number (128695878).

Almost surely, 2^386087631 is an apocalyptic number.

386087631 is a deficient number, since it is larger than the sum of its proper divisors (128695881).

386087631 is a wasteful number, since it uses less digits than its factorization.

386087631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128695880.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 386087631 is about 19649.1127280598. The cubic root of 386087631 is about 728.1630369613.

The spelling of 386087631 in words is "three hundred eighty-six million, eighty-seven thousand, six hundred thirty-one".