311203113 has 8 divisors (see below), whose sum is σ = 446855808. Its totient is φ = 191509584.

The previous prime is 311203097. The next prime is 311203127. The reversal of 311203113 is 311302113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311203113 - 2⁴ = 311203097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311203092 and 311203101.

It is not an unprimeable number, because it can be changed into a prime (311203313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3989745 + ... + 3989822.

It is an arithmetic number, because the mean of its divisors is an integer number (55856976).

Almost surely, 2^311203113 is an apocalyptic number.

It is an amenable number.

311203113 is a deficient number, since it is larger than the sum of its proper divisors (135652695).

311203113 is a wasteful number, since it uses less digits than its factorization.

311203113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979583.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 311203113 is about 17640.9498893909. The cubic root of 311203113 is about 677.6643577589.

Adding to 311203113 its reverse (311302113), we get a palindrome (622505226).

The spelling of 311203113 in words is "three hundred eleven million, two hundred three thousand, one hundred thirteen".