315323340240 has 80 divisors (see below), whose sum is σ = 979113189888. Its totient is φ = 83947657728.

The previous prime is 315323340217. The next prime is 315323340251. The reversal of 315323340240 is 42043323513.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×315323340240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 315323340198 and 315323340207.

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 15 ways as a sum of consecutive naturals, for example, 936567 + ... + 1227926.

Almost surely, 2^315323340240 is an apocalyptic number.

315323340240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

315323340240 is an abundant number, since it is smaller than the sum of its proper divisors (663789849648).

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

315323340240 is a wasteful number, since it uses less digits than its factorization.

315323340240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165116 (or 2165110 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 315323340240 its reverse (42043323513), we get a palindrome (357366663753).

The spelling of 315323340240 in words is "three hundred fifteen billion, three hundred twenty-three million, three hundred forty thousand, two hundred forty".