315211940 has 12 divisors (see below), whose sum is σ = 661945116. Its totient is φ = 126084768.

The previous prime is 315211931. The next prime is 315211951. The reversal of 315211940 is 49112513.

It can be written as a sum of positive squares in 2 ways, for example, as 123832384 + 191379556 = 11128^2 + 13834^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7880279 + ... + 7880318.

It is an arithmetic number, because the mean of its divisors is an integer number (55162093).

Almost surely, 2^315211940 is an apocalyptic number.

It is an amenable number.

315211940 is an abundant number, since it is smaller than the sum of its proper divisors (346733176).

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

315211940 is a wasteful number, since it uses less digits than its factorization.

315211940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15760606 (or 15760604 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 315211940 is about 17754.2090784129. The cubic root of 315211940 is about 680.5617762499.

The spelling of 315211940 in words is "three hundred fifteen million, two hundred eleven thousand, nine hundred forty".