387265631 has 2 divisors, whose sum is σ = 387265632. Its totient is φ = 387265630.

The previous prime is 387265583. The next prime is 387265649. The reversal of 387265631 is 136562783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 387265631 - 2²² = 383071327 is a prime.

It is a super-2 number, since 2×387265631² = 299949337907656322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387265531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193632815 + 193632816.

It is an arithmetic number, because the mean of its divisors is an integer number (193632816).

Almost surely, 2^387265631 is an apocalyptic number.

387265631 is a deficient number, since it is larger than the sum of its proper divisors (1).

387265631 is an equidigital number, since it uses as much as digits as its factorization.

387265631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 387265631 is about 19679.0658060793. The cubic root of 387265631 is about 728.9028561730.

The spelling of 387265631 in words is "three hundred eighty-seven million, two hundred sixty-five thousand, six hundred thirty-one".