1203312001 has 4 divisors (see below), whose sum is σ = 1228914432. Its totient is φ = 1177709572.

The previous prime is 1203311959. The next prime is 1203312041. The reversal of 1203312001 is 1002133021.

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 1203312001 - 2¹⁷ = 1203180929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203312041) 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, 12801145 + ... + 12801238.

It is an arithmetic number, because the mean of its divisors is an integer number (307228608).

Almost surely, 2^1203312001 is an apocalyptic number.

It is an amenable number.

1203312001 is a deficient number, since it is larger than the sum of its proper divisors (25602431).

1203312001 is an equidigital number, since it uses as much as digits as its factorization.

1203312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25602430.

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

The square root of 1203312001 is about 34688.7878283459. The cubic root of 1203312001 is about 1063.6353173033.

Adding to 1203312001 its reverse (1002133021), we get a palindrome (2205445022).

The spelling of 1203312001 in words is "one billion, two hundred three million, three hundred twelve thousand, one".