387752331 has 8 divisors (see below), whose sum is σ = 539481600. Its totient is φ = 247262312.

The previous prime is 387752329. The next prime is 387752363. The reversal of 387752331 is 133257783.

It is a happy number.

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 387752331 - 2¹ = 387752329 is a prime.

It is a super-2 number, since 2×387752331² = 300703740391867122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 387752331.

It is not an unprimeable number, because it can be changed into a prime (387752311) 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, 2809731 + ... + 2809868.

It is an arithmetic number, because the mean of its divisors is an integer number (67435200).

Almost surely, 2^387752331 is an apocalyptic number.

387752331 is a deficient number, since it is larger than the sum of its proper divisors (151729269).

387752331 is a wasteful number, since it uses less digits than its factorization.

387752331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5619625.

The product of its digits is 105840, while the sum is 39.

The square root of 387752331 is about 19691.4278557955. The cubic root of 387752331 is about 729.2080803573.

The spelling of 387752331 in words is "three hundred eighty-seven million, seven hundred fifty-two thousand, three hundred thirty-one".