123012231 has 8 divisors (see below), whose sum is σ = 164068464. Its totient is φ = 81982080.

The previous prime is 123012223. The next prime is 123012271. The reversal of 123012231 is 132210321.

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

It is not a de Polignac number, because 123012231 - 2³ = 123012223 is a prime.

It is a super-2 number, since 2×123012231² = 30264017951194722, 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 123012231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012271) 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, 12021 + ... + 19761.

It is an arithmetic number, because the mean of its divisors is an integer number (20508558).

Almost surely, 2^123012231 is an apocalyptic number.

123012231 is a deficient number, since it is larger than the sum of its proper divisors (41056233).

123012231 is an equidigital number, since it uses as much as digits as its factorization.

123012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13041.

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

The square root of 123012231 is about 11091.0879087671. The cubic root of 123012231 is about 497.3354670853.

Adding to 123012231 its reverse (132210321), we get a palindrome (255222552).

The spelling of 123012231 in words is "one hundred twenty-three million, twelve thousand, two hundred thirty-one".