6131691 has 12 divisors (see below), whose sum is σ = 8884200. Its totient is φ = 4075200.

The previous prime is 6131683. The next prime is 6131753. The reversal of 6131691 is 1961316.

6131691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6131691 - 2³ = 6131683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6131621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2760 + ... + 4458.

It is an arithmetic number, because the mean of its divisors is an integer number (740350).

Almost surely, 2^6131691 is an apocalyptic number.

6131691 is a deficient number, since it is larger than the sum of its proper divisors (2752509).

6131691 is a wasteful number, since it uses less digits than its factorization.

6131691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2103 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 6131691 is about 2476.2251513140. The cubic root of 6131691 is about 183.0318855127.

It can be divided in two parts, 613 and 1691, that added together give a square (2304 = 48²).

The spelling of 6131691 in words is "six million, one hundred thirty-one thousand, six hundred ninety-one".