3102898721 has 16 divisors (see below), whose sum is σ = 3562003200. Its totient is φ = 2679101568.

The previous prime is 3102898663. The next prime is 3102898723. The reversal of 3102898721 is 1278982013.

3102898721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3102898721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3102898723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59996 + ... + 99021.

It is an arithmetic number, because the mean of its divisors is an integer number (222625200).

Almost surely, 2^3102898721 is an apocalyptic number.

It is an amenable number.

3102898721 is a deficient number, since it is larger than the sum of its proper divisors (459104479).

3102898721 is a wasteful number, since it uses less digits than its factorization.

3102898721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159128.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 3102898721 is about 55703.6688289021. The cubic root of 3102898721 is about 1458.5540699783.

The spelling of 3102898721 in words is "three billion, one hundred two million, eight hundred ninety-eight thousand, seven hundred twenty-one".