315405140 has 24 divisors (see below), whose sum is σ = 662709600. Its totient is φ = 126093728.

The previous prime is 315405133. The next prime is 315405227. The reversal of 315405140 is 41504513.

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, 51059 + ... + 56901.

It is an arithmetic number, because the mean of its divisors is an integer number (27612900).

Almost surely, 2^315405140 is an apocalyptic number.

It is an amenable number.

315405140 is an abundant number, since it is smaller than the sum of its proper divisors (347304460).

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

315405140 is a wasteful number, since it uses less digits than its factorization.

315405140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551 (or 8549 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 315405140 is about 17759.6492082473. The cubic root of 315405140 is about 680.7007913743.

Adding to 315405140 its reverse (41504513), we get a palindrome (356909653).

The spelling of 315405140 in words is "three hundred fifteen million, four hundred five thousand, one hundred forty".