311320101 has 4 divisors (see below), whose sum is σ = 415093472. Its totient is φ = 207546732.

The previous prime is 311320081. The next prime is 311320103. The reversal of 311320101 is 101023113.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101023113 = 3 ⋅33674371.

It is not a de Polignac number, because 311320101 - 2¹³ = 311311909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311320103) 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, 51886681 + ... + 51886686.

It is an arithmetic number, because the mean of its divisors is an integer number (103773368).

Almost surely, 2^311320101 is an apocalyptic number.

It is an amenable number.

311320101 is a deficient number, since it is larger than the sum of its proper divisors (103773371).

311320101 is a wasteful number, since it uses less digits than its factorization.

311320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103773370.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 311320101 is about 17644.2653856713. The cubic root of 311320101 is about 677.7492633639.

Adding to 311320101 its reverse (101023113), we get a palindrome (412343214).

The spelling of 311320101 in words is "three hundred eleven million, three hundred twenty thousand, one hundred one".