31081041 has 12 divisors (see below), whose sum is σ = 45057168. Its totient is φ = 20645784.

The previous prime is 31081021. The next prime is 31081097. The reversal of 31081041 is 14018013.

It is not a de Polignac number, because 31081041 - 2⁵ = 31081009 is a prime.

It is a super-2 number, since 2×31081041² = 1932062219287362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31081021) 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 11 ways as a sum of consecutive naturals, for example, 3555 + ... + 8648.

It is an arithmetic number, because the mean of its divisors is an integer number (3754764).

Almost surely, 2^31081041 is an apocalyptic number.

It is an amenable number.

31081041 is a deficient number, since it is larger than the sum of its proper divisors (13976127).

31081041 is a wasteful number, since it uses less digits than its factorization.

31081041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12492 (or 12489 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 31081041 is about 5575.0373092922. The cubic root of 31081041 is about 314.4115696556.

Adding to 31081041 its reverse (14018013), we get a palindrome (45099054).

The spelling of 31081041 in words is "thirty-one million, eighty-one thousand, forty-one".