388257123 has 4 divisors (see below), whose sum is σ = 517676168. Its totient is φ = 258838080.

The previous prime is 388257119. The next prime is 388257137. The reversal of 388257123 is 321752883.

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

It is not a de Polignac number, because 388257123 - 2² = 388257119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388257193) 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, 64709518 + ... + 64709523.

It is an arithmetic number, because the mean of its divisors is an integer number (129419042).

Almost surely, 2^388257123 is an apocalyptic number.

388257123 is a deficient number, since it is larger than the sum of its proper divisors (129419045).

388257123 is a wasteful number, since it uses less digits than its factorization.

388257123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129419044.

The product of its digits is 80640, while the sum is 39.

The square root of 388257123 is about 19704.2412439556. The cubic root of 388257123 is about 729.5243808719.

The spelling of 388257123 in words is "three hundred eighty-eight million, two hundred fifty-seven thousand, one hundred twenty-three".