1311610201 has 4 divisors (see below), whose sum is σ = 1430847504. Its totient is φ = 1192372900.

The previous prime is 1311610187. The next prime is 1311610207. The reversal of 1311610201 is 1020161131.

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 a de Polignac number, because none of the positive numbers 2^k-1311610201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311610207) 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, 59618635 + ... + 59618656.

It is an arithmetic number, because the mean of its divisors is an integer number (357711876).

Almost surely, 2^1311610201 is an apocalyptic number.

1311610201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1311610201 is a deficient number, since it is larger than the sum of its proper divisors (119237303).

1311610201 is a wasteful number, since it uses less digits than its factorization.

1311610201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119237302.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1311610201 is about 36216.1593905262. The cubic root of 1311610201 is about 1094.6323073399.

Adding to 1311610201 its reverse (1020161131), we get a palindrome (2331771332).

The spelling of 1311610201 in words is "one billion, three hundred eleven million, six hundred ten thousand, two hundred one".