123101231 has 8 divisors (see below), whose sum is σ = 134416128. Its totient is φ = 111807000.

The previous prime is 123101203. The next prime is 123101239. The reversal of 123101231 is 132101321.

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 123101231 - 2²² = 118906927 is a prime.

It is a super-2 number, since 2×123101231² = 30307826147430722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123101239) 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, 8996 + ... + 18086.

It is an arithmetic number, because the mean of its divisors is an integer number (16802016).

Almost surely, 2^123101231 is an apocalyptic number.

123101231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123101231 is a deficient number, since it is larger than the sum of its proper divisors (11314897).

123101231 is a wasteful number, since it uses less digits than its factorization.

123101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10333.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123101231 is about 11095.0994137051. The cubic root of 123101231 is about 497.4553797848.

Adding to 123101231 its reverse (132101321), we get a palindrome (255202552).

The spelling of 123101231 in words is "one hundred twenty-three million, one hundred one thousand, two hundred thirty-one".