101388123 has 24 divisors (see below), whose sum is σ = 154561680. Its totient is φ = 63866880.

The previous prime is 101388113. The next prime is 101388139. The reversal of 101388123 is 321883101.

It is not a de Polignac number, because 101388123 - 2⁶ = 101388059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101388113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114643 + ... + 115523.

It is an arithmetic number, because the mean of its divisors is an integer number (6440070).

Almost surely, 2^101388123 is an apocalyptic number.

101388123 is a deficient number, since it is larger than the sum of its proper divisors (53173557).

101388123 is a wasteful number, since it uses less digits than its factorization.

101388123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 101388123 is about 10069.1669466744. The cubic root of 101388123 is about 466.2967204678.

The spelling of 101388123 in words is "one hundred one million, three hundred eighty-eight thousand, one hundred twenty-three".