315351224421 has 16 divisors (see below), whose sum is σ = 422713589760. Its totient is φ = 209111733680.

The previous prime is 315351224417. The next prime is 315351224443. The reversal of 315351224421 is 124422153513.

It is a cyclic number.

It is not a de Polignac number, because 315351224421 - 2² = 315351224417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315351224401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7004260 + ... + 7049138.

It is an arithmetic number, because the mean of its divisors is an integer number (26419599360).

Almost surely, 2^315351224421 is an apocalyptic number.

It is an amenable number.

315351224421 is a deficient number, since it is larger than the sum of its proper divisors (107362365339).

315351224421 is a wasteful number, since it uses less digits than its factorization.

315351224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57336.

The product of its digits is 28800, while the sum is 33.

Adding to 315351224421 its reverse (124422153513), we get a palindrome (439773377934).

The spelling of 315351224421 in words is "three hundred fifteen billion, three hundred fifty-one million, two hundred twenty-four thousand, four hundred twenty-one".