312722340 has 96 divisors (see below), whose sum is σ = 1014902784. Its totient is φ = 70465920.

The previous prime is 312722321. The next prime is 312722351. The reversal of 312722340 is 43227213.

It is a self number, because there is not a number n which added to its sum of digits gives 312722340.

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 31 ways as a sum of consecutive naturals, for example, 24577 + ... + 35063.

It is an arithmetic number, because the mean of its divisors is an integer number (10571904).

Almost surely, 2^312722340 is an apocalyptic number.

312722340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312722340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507451392).

312722340 is an abundant number, since it is smaller than the sum of its proper divisors (702180444).

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

312722340 is a wasteful number, since it uses less digits than its factorization.

312722340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10577 (or 10575 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 312722340 is about 17683.9571363425. The cubic root of 312722340 is about 678.7653056250.

Adding to 312722340 its reverse (43227213), we get a palindrome (355949553).

The spelling of 312722340 in words is "three hundred twelve million, seven hundred twenty-two thousand, three hundred forty".