1231314432 has 80 divisors (see below), whose sum is σ = 3313194192. Its totient is φ = 406323200.

The previous prime is 1231314421. The next prime is 1231314517. The reversal of 1231314432 is 2344131321.

It is a happy number.

It is a super-2 number, since 2×1231314432² = 3032270460902965248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 151168 + ... + 159104.

Almost surely, 2^1231314432 is an apocalyptic number.

1231314432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231314432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656597096).

1231314432 is an abundant number, since it is smaller than the sum of its proper divisors (2081879760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231314432 is an equidigital number, since it uses as much as digits as its factorization.

1231314432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8059 (or 8043 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1231314432 is about 35090.0902250194. The cubic root of 1231314432 is about 1071.8227968774.

Adding to 1231314432 its reverse (2344131321), we get a palindrome (3575445753).

The spelling of 1231314432 in words is "one billion, two hundred thirty-one million, three hundred fourteen thousand, four hundred thirty-two".