1312203001 has 4 divisors (see below), whose sum is σ = 1320060672. Its totient is φ = 1304345332.

The previous prime is 1312202993. The next prime is 1312203019. The reversal of 1312203001 is 1003022131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312203001 - 2³ = 1312202993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312203031) 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, 3928585 + ... + 3928918.

It is an arithmetic number, because the mean of its divisors is an integer number (330015168).

Almost surely, 2^1312203001 is an apocalyptic number.

It is an amenable number.

1312203001 is a deficient number, since it is larger than the sum of its proper divisors (7857671).

1312203001 is an equidigital number, since it uses as much as digits as its factorization.

1312203001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857670.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1312203001 is about 36224.3426579420. The cubic root of 1312203001 is about 1094.7971938019.

Adding to 1312203001 its reverse (1003022131), we get a palindrome (2315225132).

The spelling of 1312203001 in words is "one billion, three hundred twelve million, two hundred three thousand, one".