313432140 has 48 divisors (see below), whose sum is σ = 1002984192. Its totient is φ = 71641536.

The previous prime is 313432139. The next prime is 313432157. The reversal of 313432140 is 41234313.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372714 + ... + 373553.

It is an arithmetic number, because the mean of its divisors is an integer number (20895504).

Almost surely, 2^313432140 is an apocalyptic number.

313432140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313432140 is an abundant number, since it is smaller than the sum of its proper divisors (689552052).

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

313432140 is a wasteful number, since it uses less digits than its factorization.

313432140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746286 (or 746284 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 313432140 is about 17704.0147989093. The cubic root of 313432140 is about 679.2784589878.

Adding to 313432140 its reverse (41234313), we get a palindrome (354666453).

The spelling of 313432140 in words is "three hundred thirteen million, four hundred thirty-two thousand, one hundred forty".