1311420201 has 16 divisors (see below), whose sum is σ = 2152074624. Its totient is φ = 691737984.

The previous prime is 1311420191. The next prime is 1311420203. The reversal of 1311420201 is 1020241131.

It is not a de Polignac number, because 1311420201 - 2¹⁰ = 1311419177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311420203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2401596 + ... + 2402141.

It is an arithmetic number, because the mean of its divisors is an integer number (134504664).

Almost surely, 2^1311420201 is an apocalyptic number.

It is an amenable number.

1311420201 is a deficient number, since it is larger than the sum of its proper divisors (840654423).

1311420201 is a wasteful number, since it uses less digits than its factorization.

1311420201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803760.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1311420201 is about 36213.5361570781. The cubic root of 1311420201 is about 1094.5794486014.

Adding to 1311420201 its reverse (1020241131), we get a palindrome (2331661332).

The spelling of 1311420201 in words is "one billion, three hundred eleven million, four hundred twenty thousand, two hundred one".