1331123312 has 20 divisors (see below), whose sum is σ = 2592560256. Its totient is φ = 662075520.

The previous prime is 1331123309. The next prime is 1331123317. The reversal of 1331123312 is 2133211331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331123317) 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, 214733 + ... + 220844.

Almost surely, 2^1331123312 is an apocalyptic number.

It is an amenable number.

1331123312 is a deficient number, since it is larger than the sum of its proper divisors (1261436944).

1331123312 is a wasteful number, since it uses less digits than its factorization.

1331123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435776 (or 435770 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 1331123312 is about 36484.5626532647. The cubic root of 1331123312 is about 1100.0339691989.

Adding to 1331123312 its reverse (2133211331), we get a palindrome (3464334643).

The spelling of 1331123312 in words is "one billion, three hundred thirty-one million, one hundred twenty-three thousand, three hundred twelve".