31992973069 has 2 divisors, whose sum is σ = 31992973070. Its totient is φ = 31992973068.

The previous prime is 31992973027. The next prime is 31992973073. The reversal of 31992973069 is 96037929913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30690484969 + 1302488100 = 175187^2 + 36090^2 .

It is a cyclic number.

It is not a de Polignac number, because 31992973069 - 2⁷ = 31992972941 is a prime.

It is a super-2 number, since 2×31992973069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31992973169) 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, 15996486534 + 15996486535.

It is an arithmetic number, because the mean of its divisors is an integer number (15996486535).

Almost surely, 2^31992973069 is an apocalyptic number.

It is an amenable number.

31992973069 is a deficient number, since it is larger than the sum of its proper divisors (1).

31992973069 is an equidigital number, since it uses as much as digits as its factorization.

31992973069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4960116, while the sum is 58.

The spelling of 31992973069 in words is "thirty-one billion, nine hundred ninety-two million, nine hundred seventy-three thousand, sixty-nine".