311201313131 has 16 divisors (see below), whose sum is σ = 317484441600. Its totient is φ = 304958455200.

The previous prime is 311201313097. The next prime is 311201313161. The reversal of 311201313131 is 131313102113.

It is a cyclic number.

It is not a de Polignac number, because 311201313131 - 2¹⁸ = 311201050987 is a prime.

It is a super-2 number, since 2×311201313131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311201313161) 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, 18428750 + ... + 18445628.

It is an arithmetic number, because the mean of its divisors is an integer number (19842777600).

Almost surely, 2^311201313131 is an apocalyptic number.

311201313131 is a deficient number, since it is larger than the sum of its proper divisors (6283128469).

311201313131 is a wasteful number, since it uses less digits than its factorization.

311201313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18050.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 311201313131 its reverse (131313102113), we get a palindrome (442514415244).

The spelling of 311201313131 in words is "three hundred eleven billion, two hundred one million, three hundred thirteen thousand, one hundred thirty-one".