31252869 has 12 divisors (see below), whose sum is σ = 45240000. Its totient is φ = 20790504.

The previous prime is 31252861. The next prime is 31252877. The reversal of 31252869 is 96825213.

It is an interprime number because it is at equal distance from previous prime (31252861) and next prime (31252877).

It is not a de Polignac number, because 31252869 - 2³ = 31252861 is a prime.

It is a super-2 number, since 2×31252869² = 1953483641462322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31252861) 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 11 ways as a sum of consecutive naturals, for example, 1012 + ... + 7970.

It is an arithmetic number, because the mean of its divisors is an integer number (3770000).

Almost surely, 2^31252869 is an apocalyptic number.

It is an amenable number.

31252869 is a deficient number, since it is larger than the sum of its proper divisors (13987131).

31252869 is a wasteful number, since it uses less digits than its factorization.

31252869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7464 (or 7461 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 31252869 is about 5590.4265490211. The cubic root of 31252869 is about 314.9899014147.

The spelling of 31252869 in words is "thirty-one million, two hundred fifty-two thousand, eight hundred sixty-nine".