1320002312 has 16 divisors (see below), whose sum is σ = 2521703340. Its totient is φ = 647548096.

The previous prime is 1320002311. The next prime is 1320002353. The reversal of 1320002312 is 2132000231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1267787236 + 52215076 = 35606^2 + 7226^2 .

It is a super-2 number, since 2×1320002312² = 3484812207370690688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1320002311) 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, 1556183 + ... + 1557030.

Almost surely, 2^1320002312 is an apocalyptic number.

It is an amenable number.

1320002312 is a deficient number, since it is larger than the sum of its proper divisors (1201701028).

1320002312 is a wasteful number, since it uses less digits than its factorization.

1320002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113272 (or 3113268 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1320002312 is about 36331.8360670088. The cubic root of 1320002312 is about 1096.9619509343.

Adding to 1320002312 its reverse (2132000231), we get a palindrome (3452002543).

It can be divided in two parts, 132000231 and 2, that multiplied together give a palindrome (264000462).

The spelling of 1320002312 in words is "one billion, three hundred twenty million, two thousand, three hundred twelve".