31036069 has 4 divisors (see below), whose sum is σ = 31072896. Its totient is φ = 30999244.

The previous prime is 31036051. The next prime is 31036079. The reversal of 31036069 is 96063013.

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 31036069 - 2¹¹ = 31034021 is a prime.

It is a super-2 number, since 2×31036069² = 1926475157945522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31036009) 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, 17119 + ... + 18844.

It is an arithmetic number, because the mean of its divisors is an integer number (7768224).

Almost surely, 2^31036069 is an apocalyptic number.

It is an amenable number.

31036069 is a deficient number, since it is larger than the sum of its proper divisors (36827).

31036069 is an equidigital number, since it uses as much as digits as its factorization.

31036069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36826.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 31036069 is about 5571.0025130133. The cubic root of 31036069 is about 314.2598529193.

Subtracting from 31036069 its sum of digits (28), we obtain a square (31036041 = 5571²).

The spelling of 31036069 in words is "thirty-one million, thirty-six thousand, sixty-nine".