311332320201 has 16 divisors (see below), whose sum is σ = 489714741248. Its totient is φ = 172165338000.

The previous prime is 311332320199. The next prime is 311332320203. The reversal of 311332320201 is 102023233113.

It is an interprime number because it is at equal distance from previous prime (311332320199) and next prime (311332320203).

It is not a de Polignac number, because 311332320201 - 2¹ = 311332320199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311332320203) 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, 239117875 + ... + 239119176.

It is an arithmetic number, because the mean of its divisors is an integer number (30607171328).

Almost surely, 2^311332320201 is an apocalyptic number.

311332320201 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

311332320201 is a deficient number, since it is larger than the sum of its proper divisors (178382421047).

311332320201 is a wasteful number, since it uses less digits than its factorization.

311332320201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478237092.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 311332320201 its reverse (102023233113), we get a palindrome (413355553314).

The spelling of 311332320201 in words is "three hundred eleven billion, three hundred thirty-two million, three hundred twenty thousand, two hundred one".