2194731 has 24 divisors (see below), whose sum is σ = 3953664. Its totient is φ = 1139760.

The previous prime is 2194723. The next prime is 2194739. The reversal of 2194731 is 1374912.

2194731 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2194723) and next prime (2194739).

It is not a de Polignac number, because 2194731 - 2³ = 2194723 is a prime.

It is a super-2 number, since 2×2194731² = 9633688324722, which contains 22 as substring.

2194731 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 2194695 and 2194704.

It is not an unprimeable number, because it can be changed into a prime (2194739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 891 + ... + 2276.

It is an arithmetic number, because the mean of its divisors is an integer number (164736).

2^2194731 is an apocalyptic number.

2194731 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2194731 is a deficient number, since it is larger than the sum of its proper divisors (1758933).

2194731 is a wasteful number, since it uses less digits than its factorization.

2194731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191 (or 3188 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2194731 is about 1481.4624531185. The cubic root of 2194731 is about 129.9552311328.

It can be divided in two parts, 219 and 4731, that added together give a triangular number (4950 = T₉₉).

The spelling of 2194731 in words is "two million, one hundred ninety-four thousand, seven hundred thirty-one".