31034081 has 4 divisors (see below), whose sum is σ = 33421332. Its totient is φ = 28646832.

The previous prime is 31034077. The next prime is 31034093. The reversal of 31034081 is 18043013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18043013 = 37 ⋅487649.

It can be written as a sum of positive squares in 2 ways, for example, as 8755681 + 22278400 = 2959^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 31034081 - 2² = 31034077 is a prime.

It is a super-2 number, since 2×31034081² = 1926228367029122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31034021) 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 in 3 ways as a sum of consecutive naturals, for example, 1193606 + ... + 1193631.

It is an arithmetic number, because the mean of its divisors is an integer number (8355333).

Almost surely, 2^31034081 is an apocalyptic number.

It is an amenable number.

31034081 is a deficient number, since it is larger than the sum of its proper divisors (2387251).

31034081 is a wasteful number, since it uses less digits than its factorization.

31034081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387250.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 31034081 is about 5570.8240862551. The cubic root of 31034081 is about 314.2531428563.

Adding to 31034081 its reverse (18043013), we get a palindrome (49077094).

The spelling of 31034081 in words is "thirty-one million, thirty-four thousand, eighty-one".