1231321452 has 12 divisors (see below), whose sum is σ = 2873083416. Its totient is φ = 410440480.

The previous prime is 1231321451. The next prime is 1231321459. The reversal of 1231321452 is 2541231321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1231321451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51305049 + ... + 51305072.

It is an arithmetic number, because the mean of its divisors is an integer number (239423618).

Almost surely, 2^1231321452 is an apocalyptic number.

1231321452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231321452 is an abundant number, since it is smaller than the sum of its proper divisors (1641761964).

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

1231321452 is a wasteful number, since it uses less digits than its factorization.

1231321452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102610128 (or 102610126 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1231321452 is about 35090.1902531178. The cubic root of 1231321452 is about 1071.8248337743.

Adding to 1231321452 its reverse (2541231321), we get a palindrome (3772552773).

The spelling of 1231321452 in words is "one billion, two hundred thirty-one million, three hundred twenty-one thousand, four hundred fifty-two".