1231033123 has 8 divisors (see below), whose sum is σ = 1297033920. Its totient is φ = 1165153320.

The previous prime is 1231033109. The next prime is 1231033127. The reversal of 1231033123 is 3213301321.

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 1231033123 - 2²⁹ = 694162211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231033123.

It is not an unprimeable number, because it can be changed into a prime (1231033127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8965 + ... + 50422.

It is an arithmetic number, because the mean of its divisors is an integer number (162129240).

Almost surely, 2^1231033123 is an apocalyptic number.

1231033123 is a deficient number, since it is larger than the sum of its proper divisors (66000797).

1231033123 is a wasteful number, since it uses less digits than its factorization.

1231033123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60497.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1231033123 is about 35086.0816136542. The cubic root of 1231033123 is about 1071.7411669390.

Adding to 1231033123 its reverse (3213301321), we get a palindrome (4444334444).

The spelling of 1231033123 in words is "one billion, two hundred thirty-one million, thirty-three thousand, one hundred twenty-three".