313120530 has 48 divisors (see below), whose sum is σ = 818251200. Its totient is φ = 83074464.

The previous prime is 313120481. The next prime is 313120537. The reversal of 313120530 is 35021313.

313120530 is a `hidden beast` number, since 3 + 13 + 120 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (313120537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9169 + ... + 26651.

It is an arithmetic number, because the mean of its divisors is an integer number (17046900).

Almost surely, 2^313120530 is an apocalyptic number.

313120530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 313120530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409125600).

313120530 is an abundant number, since it is smaller than the sum of its proper divisors (505130670).

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

313120530 is a wasteful number, since it uses less digits than its factorization.

313120530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17695 (or 17692 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 313120530 is about 17695.2120642845. The cubic root of 313120530 is about 679.0532745233.

Adding to 313120530 its reverse (35021313), we get a palindrome (348141843).

The spelling of 313120530 in words is "three hundred thirteen million, one hundred twenty thousand, five hundred thirty".