31963069 has 2 divisors, whose sum is σ = 31963070. Its totient is φ = 31963068.

The previous prime is 31963049. The next prime is 31963097. The reversal of 31963069 is 96036913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27426169 + 4536900 = 5237^2 + 2130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31963069 is a prime.

It is a super-2 number, since 2×31963069² = 2043275559797522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31963039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15981534 + 15981535.

It is an arithmetic number, because the mean of its divisors is an integer number (15981535).

Almost surely, 2^31963069 is an apocalyptic number.

It is an amenable number.

31963069 is a deficient number, since it is larger than the sum of its proper divisors (1).

31963069 is an equidigital number, since it uses as much as digits as its factorization.

31963069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 31963069 is about 5653.5890370631. The cubic root of 31963069 is about 317.3580294033.

The spelling of 31963069 in words is "thirty-one million, nine hundred sixty-three thousand, sixty-nine".