315421303402 has 16 divisors (see below), whose sum is σ = 489470502024. Its totient is φ = 152340640000.

The previous prime is 315421303339. The next prime is 315421303409. The reversal of 315421303402 is 204303124513.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 216038110401 + 99383193001 = 464799^2 + 315251^2 .

It is not an unprimeable number, because it can be changed into a prime (315421303409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19034299 + ... + 19050862.

Almost surely, 2^315421303402 is an apocalyptic number.

315421303402 is a deficient number, since it is larger than the sum of its proper divisors (174049198622).

315421303402 is a wasteful number, since it uses less digits than its factorization.

315421303402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38085305.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 315421303402 its reverse (204303124513), we get a palindrome (519724427915).

The spelling of 315421303402 in words is "three hundred fifteen billion, four hundred twenty-one million, three hundred three thousand, four hundred two".