3031399728 has 240 divisors, whose sum is σ = 10382002176. Its totient is φ = 837941760.

The previous prime is 3031399717. The next prime is 3031399753. The reversal of 3031399728 is 8279931303.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 841900 + ... + 845492.

Almost surely, 2^3031399728 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 3031399728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5191001088).

3031399728 is an abundant number, since it is smaller than the sum of its proper divisors (7350602448).

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

3031399728 is a wasteful number, since it uses less digits than its factorization.

3031399728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654 (or 3636 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 3031399728 is about 55058.1486067231. The cubic root of 3031399728 is about 1447.2639213369.

The spelling of 3031399728 in words is "three billion, thirty-one million, three hundred ninety-nine thousand, seven hundred twenty-eight".