315021040 has 40 divisors (see below), whose sum is σ = 750295728. Its totient is φ = 122933760.

The previous prime is 315021037. The next prime is 315021079. The reversal of 315021040 is 40120513.

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 44742 + ... + 51301.

Almost surely, 2^315021040 is an apocalyptic number.

It is an amenable number.

315021040 is an abundant number, since it is smaller than the sum of its proper divisors (435274688).

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

315021040 is a wasteful number, since it uses less digits than its factorization.

315021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96097 (or 96091 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 315021040 is about 17748.8320742521. The cubic root of 315021040 is about 680.4243602632.

Adding to 315021040 its reverse (40120513), we get a palindrome (355141553).

The spelling of 315021040 in words is "three hundred fifteen million, twenty-one thousand, forty".