311113140 has 48 divisors (see below), whose sum is σ = 938128128. Its totient is φ = 76581504.

The previous prime is 311113129. The next prime is 311113171. The reversal of 311113140 is 41311113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198652 + ... + 200211.

It is an arithmetic number, because the mean of its divisors is an integer number (19544336).

Almost surely, 2^311113140 is an apocalyptic number.

311113140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311113140 is an abundant number, since it is smaller than the sum of its proper divisors (627014988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311113140 is a wasteful number, since it uses less digits than its factorization.

311113140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398888 (or 398886 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 311113140 is about 17638.3995872641. The cubic root of 311113140 is about 677.5990441748.

Adding to 311113140 its reverse (41311113), we get a palindrome (352424253).

The spelling of 311113140 in words is "three hundred eleven million, one hundred thirteen thousand, one hundred forty".