3143447965 has 16 divisors (see below), whose sum is σ = 4371736320. Its totient is φ = 2125146240.

The previous prime is 3143447959. The next prime is 3143447981. The reversal of 3143447965 is 5697443413.

It is not a de Polignac number, because 3143447965 - 2¹¹ = 3143445917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630000 + ... + 634969.

It is an arithmetic number, because the mean of its divisors is an integer number (273233520).

Almost surely, 2^3143447965 is an apocalyptic number.

3143447965 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3143447965 is a deficient number, since it is larger than the sum of its proper divisors (1228288355).

3143447965 is a wasteful number, since it uses less digits than its factorization.

3143447965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265052.

The product of its digits is 1088640, while the sum is 46.

The square root of 3143447965 is about 56066.4602503136. The cubic root of 3143447965 is about 1464.8801425548.

The spelling of 3143447965 in words is "three billion, one hundred forty-three million, four hundred forty-seven thousand, nine hundred sixty-five".