6131994 has 32 divisors (see below), whose sum is σ = 13639104. Its totient is φ = 1822080.

The previous prime is 6131989. The next prime is 6131999. The reversal of 6131994 is 4991316.

It is an interprime number because it is at equal distance from previous prime (6131989) and next prime (6131999).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6131999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2622 + ... + 4374.

It is an arithmetic number, because the mean of its divisors is an integer number (426222).

Almost surely, 2^6131994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6131994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6819552).

6131994 is an abundant number, since it is smaller than the sum of its proper divisors (7507110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6131994 is a wasteful number, since it uses less digits than its factorization.

6131994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822.

The product of its digits is 5832, while the sum is 33.

The square root of 6131994 is about 2476.2863323937. The cubic root of 6131994 is about 183.0349003280.

The spelling of 6131994 in words is "six million, one hundred thirty-one thousand, nine hundred ninety-four".