1232123403 has 8 divisors (see below), whose sum is σ = 1877521408. Its totient is φ = 704070504.

The previous prime is 1232123369. The next prime is 1232123407. The reversal of 1232123403 is 3043212321.

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

It is not a de Polignac number, because 1232123403 - 2²² = 1227929099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 58672543 = 1232123403 / (1 + 2 + 3 + 2 + 1 + 2 + 3 + 4 + 0 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 1232123403.

It is not an unprimeable number, because it can be changed into a prime (1232123407) 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, 29336251 + ... + 29336292.

It is an arithmetic number, because the mean of its divisors is an integer number (234690176).

Almost surely, 2^1232123403 is an apocalyptic number.

1232123403 is a deficient number, since it is larger than the sum of its proper divisors (645398005).

1232123403 is an equidigital number, since it uses as much as digits as its factorization.

1232123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58672553.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1232123403 is about 35101.6153901783. The cubic root of 1232123403 is about 1072.0574739341.

Adding to 1232123403 its reverse (3043212321), we get a palindrome (4275335724).

The spelling of 1232123403 in words is "one billion, two hundred thirty-two million, one hundred twenty-three thousand, four hundred three".