31120969 has 8 divisors (see below), whose sum is σ = 34219008. Its totient is φ = 28067760.

The previous prime is 31120963. The next prime is 31120987. The reversal of 31120969 is 96902113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31120969 - 2⁵ = 31120937 is a prime.

It is a super-2 number, since 2×31120969² = 1937029422997922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31120969.

It is not an unprimeable number, because it can be changed into a prime (31120963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9742 + ... + 12535.

It is an arithmetic number, because the mean of its divisors is an integer number (4277376).

Almost surely, 2^31120969 is an apocalyptic number.

It is an amenable number.

31120969 is a deficient number, since it is larger than the sum of its proper divisors (3098039).

31120969 is a wasteful number, since it uses less digits than its factorization.

31120969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22415.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 31120969 is about 5578.6171225493. The cubic root of 31120969 is about 314.5461474439.

The spelling of 31120969 in words is "thirty-one million, one hundred twenty thousand, nine hundred sixty-nine".