1312133002 has 4 divisors (see below), whose sum is σ = 1968199506. Its totient is φ = 656066500.

The previous prime is 1312132999. The next prime is 1312133023. The reversal of 1312133002 is 2003312131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2003312131 = 3109 ⋅644359.

It can be written as a sum of positive squares in only one way, i.e., 906070201 + 406062801 = 30101^2 + 20151^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328033249 + ... + 328033252.

Almost surely, 2^1312133002 is an apocalyptic number.

1312133002 is a deficient number, since it is larger than the sum of its proper divisors (656066504).

1312133002 is an equidigital number, since it uses as much as digits as its factorization.

1312133002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656066503.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1312133002 is about 36223.3764577517. The cubic root of 1312133002 is about 1094.7777262675. Note that the first 4 decimals are identical.

Adding to 1312133002 its reverse (2003312131), we get a palindrome (3315445133).

The spelling of 1312133002 in words is "one billion, three hundred twelve million, one hundred thirty-three thousand, two".