1331312452 has 24 divisors (see below), whose sum is σ = 2343261312. Its totient is φ = 661821600.

The previous prime is 1331312431. The next prime is 1331312471. The reversal of 1331312452 is 2542131331.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569478 + ... + 571810.

It is an arithmetic number, because the mean of its divisors is an integer number (97635888).

Almost surely, 2^1331312452 is an apocalyptic number.

It is an amenable number.

1331312452 is a deficient number, since it is larger than the sum of its proper divisors (1011948860).

1331312452 is a wasteful number, since it uses less digits than its factorization.

1331312452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099 (or 3097 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 1331312452 is about 36487.1546163852. The cubic root of 1331312452 is about 1100.0860681966.

Adding to 1331312452 its reverse (2542131331), we get a palindrome (3873443783).

The spelling of 1331312452 in words is "one billion, three hundred thirty-one million, three hundred twelve thousand, four hundred fifty-two".