31043269 has 2 divisors, whose sum is σ = 31043270. Its totient is φ = 31043268.

The previous prime is 31043267. The next prime is 31043297. The reversal of 31043269 is 96234013.

It is an a-pointer prime, because the next prime (31043297) can be obtained adding 31043269 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30636225 + 407044 = 5535^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 31043269 - 2¹ = 31043267 is a prime.

It is a super-2 number, since 2×31043269² = 1927369100412722, which contains 22 as substring.

Together with 31043267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31043267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15521634 + 15521635.

It is an arithmetic number, because the mean of its divisors is an integer number (15521635).

Almost surely, 2^31043269 is an apocalyptic number.

It is an amenable number.

31043269 is a deficient number, since it is larger than the sum of its proper divisors (1).

31043269 is an equidigital number, since it uses as much as digits as its factorization.

31043269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 31043269 is about 5571.6486788024. The cubic root of 31043269 is about 314.2841525601.

The spelling of 31043269 in words is "thirty-one million, forty-three thousand, two hundred sixty-nine".