315212311420 has 96 divisors (see below), whose sum is σ = 690338436480. Its totient is φ = 120786785280.

The previous prime is 315212311399. The next prime is 315212311489. The reversal of 315212311420 is 24113212513.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43552042 + ... + 43559278.

It is an arithmetic number, because the mean of its divisors is an integer number (7191025380).

Almost surely, 2^315212311420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315212311420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345169218240).

315212311420 is an abundant number, since it is smaller than the sum of its proper divisors (375126125060).

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

315212311420 is a wasteful number, since it uses less digits than its factorization.

315212311420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8183 (or 8181 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 315212311420 its reverse (24113212513), we get a palindrome (339325523933).

The spelling of 315212311420 in words is "three hundred fifteen billion, two hundred twelve million, three hundred eleven thousand, four hundred twenty".