315650640 has 40 divisors (see below), whose sum is σ = 978517728. Its totient is φ = 84173440.

The previous prime is 315650639. The next prime is 315650701. The reversal of 315650640 is 46056513.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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 = 315650598 and 315650607.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 657366 + ... + 657845.

Almost surely, 2^315650640 is an apocalyptic number.

315650640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

315650640 is an abundant number, since it is smaller than the sum of its proper divisors (662867088).

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

315650640 is a wasteful number, since it uses less digits than its factorization.

315650640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315227 (or 1315221 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 315650640 is about 17766.5595994272. The cubic root of 315650640 is about 680.8773565639.

The spelling of 315650640 in words is "three hundred fifteen million, six hundred fifty thousand, six hundred forty".