313211140 has 96 divisors (see below), whose sum is σ = 743250816. Its totient is φ = 109885440.

The previous prime is 313211069. The next prime is 313211147. The reversal of 313211140 is 41112313.

It is not an unprimeable number, because it can be changed into a prime (313211147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1068834 + ... + 1069126.

It is an arithmetic number, because the mean of its divisors is an integer number (7742196).

Almost surely, 2^313211140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313211140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371625408).

313211140 is an abundant number, since it is smaller than the sum of its proper divisors (430039676).

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

313211140 is a wasteful number, since it uses less digits than its factorization.

313211140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 313211140 is about 17697.7721761808. The cubic root of 313211140 is about 679.1187690930.

Adding to 313211140 its reverse (41112313), we get a palindrome (354323453).

The spelling of 313211140 in words is "three hundred thirteen million, two hundred eleven thousand, one hundred forty".