1312001203 has 2 divisors, whose sum is σ = 1312001204. Its totient is φ = 1312001202.

The previous prime is 1312001183. The next prime is 1312001279. The reversal of 1312001203 is 3021002131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312001203 - 2⁹ = 1312000691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312011203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656000601 + 656000602.

It is an arithmetic number, because the mean of its divisors is an integer number (656000602).

Almost surely, 2^1312001203 is an apocalyptic number.

1312001203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312001203 is an equidigital number, since it uses as much as digits as its factorization.

1312001203 is an evil number, because the sum of its binary digits is even.

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

The square root of 1312001203 is about 36221.5571586866. The cubic root of 1312001203 is about 1094.7410695564.

Adding to 1312001203 its reverse (3021002131), we get a palindrome (4333003334).

The spelling of 1312001203 in words is "one billion, three hundred twelve million, one thousand, two hundred three".