3181426 has 4 divisors (see below), whose sum is σ = 4772142. Its totient is φ = 1590712.

The previous prime is 3181421. The next prime is 3181447. The reversal of 3181426 is 6241813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6241813 = 193 ⋅32341.

It can be written as a sum of positive squares in only one way, i.e., 2725801 + 455625 = 1651^2 + 675^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3181426.

It is not an unprimeable number, because it can be changed into a prime (3181421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 795355 + ... + 795358.

Almost surely, 2^3181426 is an apocalyptic number.

3181426 is a deficient number, since it is larger than the sum of its proper divisors (1590716).

3181426 is a wasteful number, since it uses less digits than its factorization.

3181426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590715.

The product of its digits is 1152, while the sum is 25.

The square root of 3181426 is about 1783.6552357448. The cubic root of 3181426 is about 147.0755931872.

The spelling of 3181426 in words is "three million, one hundred eighty-one thousand, four hundred twenty-six".