6143931 has 20 divisors (see below), whose sum is σ = 9281184. Its totient is φ = 4050000.

The previous prime is 6143927. The next prime is 6143941. The reversal of 6143931 is 1393416.

It is not a de Polignac number, because 6143931 - 2² = 6143927 is a prime.

It is a super-2 number, since 2×6143931² = 75495776265522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 6143895 and 6143904.

It is not an unprimeable number, because it can be changed into a prime (6143941) 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, 7806 + ... + 8556.

Almost surely, 2^6143931 is an apocalyptic number.

6143931 is a deficient number, since it is larger than the sum of its proper divisors (3137253).

6143931 is a wasteful number, since it uses less digits than its factorization.

6143931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 855 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 6143931 is about 2478.6954229998. The cubic root of 6143931 is about 183.1535931698.

The spelling of 6143931 in words is "six million, one hundred forty-three thousand, nine hundred thirty-one".