3147679521 has 20 divisors (see below), whose sum is σ = 5373817152. Its totient is φ = 1798673688.

The previous prime is 3147679501. The next prime is 3147679529. The reversal of 3147679521 is 1259767413.

It is not a de Polignac number, because 3147679521 - 2⁹ = 3147679009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3147679529) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2775165 + ... + 2776298.

Almost surely, 2^3147679521 is an apocalyptic number.

It is an amenable number.

3147679521 is a deficient number, since it is larger than the sum of its proper divisors (2226137631).

3147679521 is an equidigital number, since it uses as much as digits as its factorization.

3147679521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551482 (or 5551473 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 3147679521 is about 56104.1845230817. The cubic root of 3147679521 is about 1465.5371645077.

The spelling of 3147679521 in words is "three billion, one hundred forty-seven million, six hundred seventy-nine thousand, five hundred twenty-one".