102123231 has 8 divisors (see below), whose sum is σ = 155616384. Its totient is φ = 58356120.

The previous prime is 102123227. The next prime is 102123247. The reversal of 102123231 is 132321201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102123231 - 2² = 102123227 is a prime.

It is a super-2 number, since 2×102123231² = 20858308619758722, 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 102123231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123731) 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, 2431485 + ... + 2431526.

It is an arithmetic number, because the mean of its divisors is an integer number (19452048).

Almost surely, 2^102123231 is an apocalyptic number.

102123231 is a deficient number, since it is larger than the sum of its proper divisors (53493153).

102123231 is an equidigital number, since it uses as much as digits as its factorization.

102123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863021.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 102123231 is about 10105.6039403887. The cubic root of 102123231 is about 467.4209591176.

Adding to 102123231 its reverse (132321201), we get a palindrome (234444432).

The spelling of 102123231 in words is "one hundred two million, one hundred twenty-three thousand, two hundred thirty-one".