123231011 has 8 divisors (see below), whose sum is σ = 130685904. Its totient is φ = 115799040.

The previous prime is 123231001. The next prime is 123231019. The reversal of 123231011 is 110132321.

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 123231011 - 2¹⁴ = 123214627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123231019) 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, 6056 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (16335738).

Almost surely, 2^123231011 is an apocalyptic number.

123231011 is a deficient number, since it is larger than the sum of its proper divisors (7454893).

123231011 is a wasteful number, since it uses less digits than its factorization.

123231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11461.

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

The square root of 123231011 is about 11100.9464010957. The cubic root of 123231011 is about 497.6301332092.

Adding to 123231011 its reverse (110132321), we get a palindrome (233363332).

It can be divided in two parts, 1232310 and 11, that added together give a palindrome (1232321).

The spelling of 123231011 in words is "one hundred twenty-three million, two hundred thirty-one thousand, eleven".