31961063 has 2 divisors, whose sum is σ = 31961064. Its totient is φ = 31961062.

The previous prime is 31961051. The next prime is 31961087. The reversal of 31961063 is 36016913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31961063 - 2⁴ = 31961047 is a prime.

It is equal to p_1971542 and since 31961063 and 1971542 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31961023) 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, 15980531 + 15980532.

It is an arithmetic number, because the mean of its divisors is an integer number (15980532).

Almost surely, 2^31961063 is an apocalyptic number.

31961063 is a deficient number, since it is larger than the sum of its proper divisors (1).

31961063 is an equidigital number, since it uses as much as digits as its factorization.

31961063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 31961063 is about 5653.4116248510. The cubic root of 31961063 is about 317.3513901417.

Adding to 31961063 its reverse (36016913), we get a palindrome (67977976).

The spelling of 31961063 in words is "thirty-one million, nine hundred sixty-one thousand, sixty-three".