311202113 has 4 divisors (see below), whose sum is σ = 313956228. Its totient is φ = 308448000.

The previous prime is 311202107. The next prime is 311202127.

311202113 is nontrivially palindromic in base 10.

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 17833729 + 293368384 = 4223^2 + 17128^2 .

It is a cyclic number.

It is not a de Polignac number, because 311202113 - 2¹⁸ = 310939969 is a prime.

It is a super-3 number, since 3×311202113³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311202173) 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, 1376888 + ... + 1377113.

It is an arithmetic number, because the mean of its divisors is an integer number (78489057).

Almost surely, 2^311202113 is an apocalyptic number.

It is an amenable number.

311202113 is a deficient number, since it is larger than the sum of its proper divisors (2754115).

311202113 is a wasteful number, since it uses less digits than its factorization.

311202113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754114.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 311202113 is about 17640.9215462231. The cubic root of 311202113 is about 677.6636319038.

It can be divided in two parts, 31120 and 2113, that added together give a palindrome (33233).

The spelling of 311202113 in words is "three hundred eleven million, two hundred two thousand, one hundred thirteen".