31069069 has 4 divisors (see below), whose sum is σ = 31578460. Its totient is φ = 30559680.

The previous prime is 31069057. The next prime is 31069097. The reversal of 31069069 is 96096013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1855044 + 29214025 = 1362^2 + 5405^2 .

It is a cyclic number.

It is not a de Polignac number, because 31069069 - 2¹⁹ = 30544781 is a prime.

It is a super-2 number, since 2×31069069² = 1930574097053522, 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 (31069369) 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, 254604 + ... + 254725.

It is an arithmetic number, because the mean of its divisors is an integer number (7894615).

Almost surely, 2^31069069 is an apocalyptic number.

It is an amenable number.

31069069 is a deficient number, since it is larger than the sum of its proper divisors (509391).

31069069 is an equidigital number, since it uses as much as digits as its factorization.

31069069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509390.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 31069069 is about 5573.9634910896. The cubic root of 31069069 is about 314.3711954319.

The spelling of 31069069 in words is "thirty-one million, sixty-nine thousand, sixty-nine".