31234081 has 12 divisors (see below), whose sum is σ = 34040064. Its totient is φ = 28625400.

The previous prime is 31234061. The next prime is 31234109. The reversal of 31234081 is 18043213.

It is not a de Polignac number, because 31234081 - 2¹⁹ = 30709793 is a prime.

It is a super-2 number, since 2×31234081² = 1951135631829122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234001) 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, 9796 + ... + 12586.

It is an arithmetic number, because the mean of its divisors is an integer number (2836672).

Almost surely, 2^31234081 is an apocalyptic number.

31234081 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31234081 is a deficient number, since it is larger than the sum of its proper divisors (2805983).

31234081 is a wasteful number, since it uses less digits than its factorization.

31234081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860 (or 2841 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 31234081 is about 5588.7459237292. The cubic root of 31234081 is about 314.9267689008.

Adding to 31234081 its reverse (18043213), we get a palindrome (49277294).

The spelling of 31234081 in words is "thirty-one million, two hundred thirty-four thousand, eighty-one".