231384123 has 12 divisors (see below), whose sum is σ = 334436128. Its totient is φ = 154157040.

The previous prime is 231384107. The next prime is 231384133. The reversal of 231384123 is 321483132.

It is not a de Polignac number, because 231384123 - 2⁴ = 231384107 is a prime.

It is a super-2 number, since 2×231384123² = 107077224752958258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231384133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8286 + ... + 23052.

Almost surely, 2^231384123 is an apocalyptic number.

231384123 is a deficient number, since it is larger than the sum of its proper divisors (103052005).

231384123 is a wasteful number, since it uses less digits than its factorization.

231384123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16514 (or 16511 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 231384123 is about 15211.3156235744. The cubic root of 231384123 is about 613.9191564913.

Subtracting 231384123 from its reverse (321483132), we obtain a palindrome (90099009).

It can be divided in two parts, 23138 and 4123, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 231384123 in words is "two hundred thirty-one million, three hundred eighty-four thousand, one hundred twenty-three".