31806053 has 4 divisors (see below), whose sum is σ = 31821120. Its totient is φ = 31790988.

The previous prime is 31806041. The next prime is 31806067. The reversal of 31806053 is 35060813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31806053 - 2¹⁴ = 31789669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31806013) 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, 3725 + ... + 8802.

It is an arithmetic number, because the mean of its divisors is an integer number (7955280).

Almost surely, 2^31806053 is an apocalyptic number.

It is an amenable number.

31806053 is a deficient number, since it is larger than the sum of its proper divisors (15067).

31806053 is a wasteful number, since it uses less digits than its factorization.

31806053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15066.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 31806053 is about 5639.6855408790. The cubic root of 31806053 is about 316.8375108895.

Adding to 31806053 its reverse (35060813), we get a palindrome (66866866).

The spelling of 31806053 in words is "thirty-one million, eight hundred six thousand, fifty-three".