309975324340 has 36 divisors (see below), whose sum is σ = 715505031108. Its totient is φ = 112718298880.

The previous prime is 309975324289. The next prime is 309975324401. The reversal of 309975324340 is 43423579903.

It can be written as a sum of positive squares in 2 ways, for example, as 156659223204 + 153316101136 = 395802^2 + 391556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64042069 + ... + 64046908.

It is an arithmetic number, because the mean of its divisors is an integer number (19875139753).

Almost surely, 2^309975324340 is an apocalyptic number.

It is an amenable number.

309975324340 is an abundant number, since it is smaller than the sum of its proper divisors (405529706768).

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

309975324340 is a wasteful number, since it uses less digits than its factorization.

309975324340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128089008 (or 128088995 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 49.

The spelling of 309975324340 in words is "three hundred nine billion, nine hundred seventy-five million, three hundred twenty-four thousand, three hundred forty".