3137881 has 2 divisors, whose sum is σ = 3137882. Its totient is φ = 3137880.

The previous prime is 3137879. The next prime is 3137899. The reversal of 3137881 is 1887313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2016400 + 1121481 = 1420^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 3137881 - 2¹ = 3137879 is a prime.

It is a super-2 number, since 2×3137881² = 19692594340322, which contains 22 as substring.

Together with 3137879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3137081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1568940 + 1568941.

It is an arithmetic number, because the mean of its divisors is an integer number (1568941).

Almost surely, 2^3137881 is an apocalyptic number.

It is an amenable number.

3137881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3137881 is an equidigital number, since it uses as much as digits as its factorization.

3137881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 3137881 is about 1771.4065033188. The cubic root of 3137881 is about 146.4014876624.

The spelling of 3137881 in words is "three million, one hundred thirty-seven thousand, eight hundred eighty-one".