3431881 has 2 divisors, whose sum is σ = 3431882. Its totient is φ = 3431880.

The previous prime is 3431867. The next prime is 3431891. The reversal of 3431881 is 1881343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2310400 + 1121481 = 1520^2 + 1059^2 .

It is an emirp because it is prime and its reverse (1881343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3431881 - 2⁵ = 3431849 is a prime.

It is a super-2 number, since 2×3431881² = 23555614396322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3431821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1715940 + 1715941.

It is an arithmetic number, because the mean of its divisors is an integer number (1715941).

Almost surely, 2^3431881 is an apocalyptic number.

It is an amenable number.

3431881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3431881 is an equidigital number, since it uses as much as digits as its factorization.

3431881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 3431881 is about 1852.5336704093. The cubic root of 3431881 is about 150.8379912348.

The spelling of 3431881 in words is "three million, four hundred thirty-one thousand, eight hundred eighty-one".