612031280 has 160 divisors (see below), whose sum is σ = 1755851904. Its totient is φ = 193609728.

The previous prime is 612031279. The next prime is 612031307. The reversal of 612031280 is 82130216.

612031280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503954 + ... + 505166.

Almost surely, 2^612031280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612031280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877925952).

612031280 is an abundant number, since it is smaller than the sum of its proper divisors (1143820624).

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

612031280 is a wasteful number, since it uses less digits than its factorization.

612031280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303 (or 1297 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 612031280 is about 24739.2659551572. The cubic root of 612031280 is about 849.0329393903.

Adding to 612031280 its reverse (82130216), we get a palindrome (694161496).

The spelling of 612031280 in words is "six hundred twelve million, thirty-one thousand, two hundred eighty".