315145422 has 48 divisors (see below), whose sum is σ = 725137920. Its totient is φ = 98574336.

The previous prime is 315145417. The next prime is 315145423. The reversal of 315145422 is 224541513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315145423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115854 + ... + 118542.

It is an arithmetic number, because the mean of its divisors is an integer number (15107040).

Almost surely, 2^315145422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315145422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362568960).

315145422 is an abundant number, since it is smaller than the sum of its proper divisors (409992498).

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

315145422 is a wasteful number, since it uses less digits than its factorization.

315145422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097 (or 3094 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 315145422 is about 17752.3356773130. The cubic root of 315145422 is about 680.5139007444.

Adding to 315145422 its reverse (224541513), we get a palindrome (539686935).

The spelling of 315145422 in words is "three hundred fifteen million, one hundred forty-five thousand, four hundred twenty-two".