387106631 has 4 divisors (see below), whose sum is σ = 387154032. Its totient is φ = 387059232.

The previous prime is 387106591. The next prime is 387106649. The reversal of 387106631 is 136601783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 387106631 - 2¹⁴ = 387090247 is a prime.

It is a super-2 number, since 2×387106631² = 299703087528340322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387106591 and 387106600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387106831) 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, 7970 + ... + 28943.

It is an arithmetic number, because the mean of its divisors is an integer number (96788508).

Almost surely, 2^387106631 is an apocalyptic number.

387106631 is a deficient number, since it is larger than the sum of its proper divisors (47401).

387106631 is a wasteful number, since it uses less digits than its factorization.

387106631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47400.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 387106631 is about 19675.0255654218. The cubic root of 387106631 is about 728.8030870830.

The spelling of 387106631 in words is "three hundred eighty-seven million, one hundred six thousand, six hundred thirty-one".