311202330401 has 4 divisors (see below), whose sum is σ = 311673136404. Its totient is φ = 310731524400.

The previous prime is 311202330391. The next prime is 311202330427. The reversal of 311202330401 is 104033202113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196129408225 + 115072922176 = 442865^2 + 339224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311202330401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311202330451) 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, 235402010 + ... + 235403331.

It is an arithmetic number, because the mean of its divisors is an integer number (77918284101).

Almost surely, 2^311202330401 is an apocalyptic number.

It is an amenable number.

311202330401 is a deficient number, since it is larger than the sum of its proper divisors (470806003).

311202330401 is an equidigital number, since it uses as much as digits as its factorization.

311202330401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470806002.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 311202330401 its reverse (104033202113), we get a palindrome (415235532514).

The spelling of 311202330401 in words is "three hundred eleven billion, two hundred two million, three hundred thirty thousand, four hundred one".