312287340 has 24 divisors (see below), whose sum is σ = 874404720. Its totient is φ = 83276608.

The previous prime is 312287321. The next prime is 312287351. The reversal of 312287340 is 43782213.

It is a super-3 number, since 3×312287340³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 312287298 and 312287307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2602335 + ... + 2602454.

It is an arithmetic number, because the mean of its divisors is an integer number (36433530).

Almost surely, 2^312287340 is an apocalyptic number.

312287340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312287340 is an abundant number, since it is smaller than the sum of its proper divisors (562117380).

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

312287340 is a wasteful number, since it uses less digits than its factorization.

312287340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204801 (or 5204799 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 312287340 is about 17671.6535728833. The cubic root of 312287340 is about 678.4504364044.

The spelling of 312287340 in words is "three hundred twelve million, two hundred eighty-seven thousand, three hundred forty".