3147031730 has 16 divisors (see below), whose sum is σ = 5720744664. Its totient is φ = 1246348800.

The previous prime is 3147031729. The next prime is 3147031747. The reversal of 3147031730 is 371307413.

It can be written as a sum of positive squares in 4 ways, for example, as 3132976729 + 14055001 = 55973^2 + 3749^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3147031693 and 3147031702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1556927 + ... + 1558946.

Almost surely, 2^3147031730 is an apocalyptic number.

3147031730 is a deficient number, since it is larger than the sum of its proper divisors (2573712934).

3147031730 is a wasteful number, since it uses less digits than its factorization.

3147031730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115981.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 3147031730 is about 56098.4111183196. The cubic root of 3147031730 is about 1465.4366219850.

The spelling of 3147031730 in words is "three billion, one hundred forty-seven million, thirty-one thousand, seven hundred thirty".