312343140 has 24 divisors (see below), whose sum is σ = 874560960. Its totient is φ = 83291488.

The previous prime is 312343127. The next prime is 312343189. The reversal of 312343140 is 41343213.

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, 2602800 + ... + 2602919.

It is an arithmetic number, because the mean of its divisors is an integer number (36440040).

Almost surely, 2^312343140 is an apocalyptic number.

312343140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312343140 is an abundant number, since it is smaller than the sum of its proper divisors (562217820).

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

312343140 is a wasteful number, since it uses less digits than its factorization.

312343140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205731 (or 5205729 counting only the distinct ones).

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

The square root of 312343140 is about 17673.2323019871. The cubic root of 312343140 is about 678.4908428665.

Adding to 312343140 its reverse (41343213), we get a palindrome (353686353).

The spelling of 312343140 in words is "three hundred twelve million, three hundred forty-three thousand, one hundred forty".