320135311400 has 48 divisors (see below), whose sum is σ = 749243905440. Its totient is φ = 127206072000.

The previous prime is 320135311387. The next prime is 320135311411. The reversal of 320135311400 is 4113531023.

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, 5270054 + ... + 5330453.

It is an arithmetic number, because the mean of its divisors is an integer number (15609248030).

Almost surely, 2^320135311400 is an apocalyptic number.

It is an amenable number.

320135311400 is an abundant number, since it is smaller than the sum of its proper divisors (429108594040).

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

320135311400 is a wasteful number, since it uses less digits than its factorization.

320135311400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600674 (or 10600665 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 320135311400 its reverse (4113531023), we get a palindrome (324248842423).

The spelling of 320135311400 in words is "three hundred twenty billion, one hundred thirty-five million, three hundred eleven thousand, four hundred".