720311432 has 16 divisors (see below), whose sum is σ = 1421667600. Its totient is φ = 341200080.

The previous prime is 720311419. The next prime is 720311453. The reversal of 720311432 is 234113027.

It is a junction number, because it is equal to n+sod(n) for n = 720311398 and 720311407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369294 + ... + 2369597.

It is an arithmetic number, because the mean of its divisors is an integer number (88854225).

Almost surely, 2^720311432 is an apocalyptic number.

It is an amenable number.

720311432 is a deficient number, since it is larger than the sum of its proper divisors (701356168).

720311432 is a wasteful number, since it uses less digits than its factorization.

720311432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738916 (or 4738912 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 720311432 is about 26838.6182952849. The cubic root of 720311432 is about 896.4101577988.

Adding to 720311432 its reverse (234113027), we get a palindrome (954424459).

The spelling of 720311432 in words is "seven hundred twenty million, three hundred eleven thousand, four hundred thirty-two".