1312001333 has 12 divisors (see below), whose sum is σ = 1412832420. Its totient is φ = 1217889792.

The previous prime is 1312001329. The next prime is 1312001377. The reversal of 1312001333 is 3331002131.

It can be written as a sum of positive squares in 6 ways, for example, as 17656804 + 1294344529 = 4202^2 + 35977^2 .

It is not a de Polignac number, because 1312001333 - 2² = 1312001329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312031333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9998 + ... + 52191.

It is an arithmetic number, because the mean of its divisors is an integer number (117736035).

Almost surely, 2^1312001333 is an apocalyptic number.

It is an amenable number.

1312001333 is a deficient number, since it is larger than the sum of its proper divisors (100831087).

1312001333 is an equidigital number, since it uses as much as digits as its factorization.

1312001333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62296 (or 62279 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1312001333 is about 36221.5589531980. The cubic root of 1312001333 is about 1094.7411057140.

Adding to 1312001333 its reverse (3331002131), we get a palindrome (4643003464).

The spelling of 1312001333 in words is "one billion, three hundred twelve million, one thousand, three hundred thirty-three".