3215105403240 has 64 divisors (see below), whose sum is σ = 9977913331200. Its totient is φ = 827797252352.

The previous prime is 3215105403229. The next prime is 3215105403253. The reversal of 3215105403240 is 423045015123.

3215105403240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 3215105403198 and 3215105403207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461936952 + ... + 461943911.

It is an arithmetic number, because the mean of its divisors is an integer number (155904895800).

Almost surely, 2^{3215105403240} is an apocalyptic number.

3215105403240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3215105403240 is an abundant number, since it is smaller than the sum of its proper divisors (6762807927960).

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

3215105403240 is a wasteful number, since it uses less digits than its factorization.

3215105403240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923880906 (or 923880902 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 3215105403240 in words is "three trillion, two hundred fifteen billion, one hundred five million, four hundred three thousand, two hundred forty".