320231521225040 has 80 divisors (see below), whose sum is σ = 784601690599296. Its totient is φ = 121310261952000.

The previous prime is 320231521225003. The next prime is 320231521225061. The reversal of 320231521225040 is 40522125132023.

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

It is a super-2 number, since 2×320231521225040² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320231521224988 and 320231521225006.

It is a congruent number.

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, 861392726 + ... + 861764405.

Almost surely, 2^{320231521225040} is an apocalyptic number.

It is an amenable number.

320231521225040 is an abundant number, since it is smaller than the sum of its proper divisors (464370169374256).

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

320231521225040 is a wasteful number, since it uses less digits than its factorization.

320231521225040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723157268 (or 1723157262 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 320231521225040 its reverse (40522125132023), we get a palindrome (360753646357063).

The spelling of 320231521225040 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred twenty-one million, two hundred twenty-five thousand, forty".