315221222430 has 80 divisors (see below), whose sum is σ = 874936681344. Its totient is φ = 81347405760.

The previous prime is 315221222419. The next prime is 315221222447. The reversal of 315221222430 is 34222122513.

315221222430 is a `hidden beast` number, since 3 + 1 + 5 + 2 + 2 + 1 + 222 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 315221222394 and 315221222403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6251697 + ... + 6301916.

Almost surely, 2^315221222430 is an apocalyptic number.

315221222430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

315221222430 is an abundant number, since it is smaller than the sum of its proper divisors (559715458914).

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

315221222430 is a wasteful number, since it uses less digits than its factorization.

315221222430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12553663 (or 12553654 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 315221222430 its reverse (34222122513), we get a palindrome (349443344943).

The spelling of 315221222430 in words is "three hundred fifteen billion, two hundred twenty-one million, two hundred twenty-two thousand, four hundred thirty".