3174451721 has 6 divisors (see below), whose sum is σ = 3692729610. Its totient is φ = 2720958576.

The previous prime is 3174451717. The next prime is 3174451723. The reversal of 3174451721 is 1271544713.

It can be written as a sum of positive squares in only one way, i.e., 2401000000 + 773451721 = 49000^2 + 27811^2 .

It is not a de Polignac number, because 3174451721 - 2² = 3174451717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3174451723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32392316 + ... + 32392413.

It is an arithmetic number, because the mean of its divisors is an integer number (615454935).

Almost surely, 2^3174451721 is an apocalyptic number.

It is an amenable number.

3174451721 is a deficient number, since it is larger than the sum of its proper divisors (518277889).

3174451721 is an equidigital number, since it uses as much as digits as its factorization.

3174451721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64784743 (or 64784736 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 3174451721 is about 56342.2729484709. The cubic root of 3174451721 is about 1469.6804218363.

The spelling of 3174451721 in words is "three billion, one hundred seventy-four million, four hundred fifty-one thousand, seven hundred twenty-one".