1231403324 has 24 divisors (see below), whose sum is σ = 2169164928. Its totient is φ = 611654400.

The previous prime is 1231403321. The next prime is 1231403333. The reversal of 1231403324 is 4233041321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231403324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231403321) 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, 534944 + ... + 537240.

It is an arithmetic number, because the mean of its divisors is an integer number (90381872).

Almost surely, 2^1231403324 is an apocalyptic number.

It is an amenable number.

1231403324 is a deficient number, since it is larger than the sum of its proper divisors (937761604).

1231403324 is a wasteful number, since it uses less digits than its factorization.

1231403324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3123 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1231403324 is about 35091.3568275722. The cubic root of 1231403324 is about 1071.8485888757.

Adding to 1231403324 its reverse (4233041321), we get a palindrome (5464444645).

The spelling of 1231403324 in words is "one billion, two hundred thirty-one million, four hundred three thousand, three hundred twenty-four".