313120140 has 24 divisors (see below), whose sum is σ = 876736560. Its totient is φ = 83498688.

The previous prime is 313120117. The next prime is 313120147. The reversal of 313120140 is 41021313.

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

It is not an unprimeable number, because it can be changed into a prime (313120147) 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, 2609275 + ... + 2609394.

It is an arithmetic number, because the mean of its divisors is an integer number (36530690).

Almost surely, 2^313120140 is an apocalyptic number.

313120140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313120140 is an abundant number, since it is smaller than the sum of its proper divisors (563616420).

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

313120140 is a wasteful number, since it uses less digits than its factorization.

313120140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218681 (or 5218679 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 313120140 is about 17695.2010443510. The cubic root of 313120140 is about 679.0529925968.

Adding to 313120140 its reverse (41021313), we get a palindrome (354141453).

The spelling of 313120140 in words is "three hundred thirteen million, one hundred twenty thousand, one hundred forty".