31067040281 has 2 divisors, whose sum is σ = 31067040282. Its totient is φ = 31067040280.

The previous prime is 31067040241. The next prime is 31067040299. The reversal of 31067040281 is 18204076013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25662438025 + 5404602256 = 160195^2 + 73516^2 .

It is a cyclic number.

It is not a de Polignac number, because 31067040281 - 2³⁴ = 13887171097 is a prime.

It is a super-2 number, since 2×31067040281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31067040241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15533520140 + 15533520141.

It is an arithmetic number, because the mean of its divisors is an integer number (15533520141).

Almost surely, 2^31067040281 is an apocalyptic number.

It is an amenable number.

31067040281 is a deficient number, since it is larger than the sum of its proper divisors (1).

31067040281 is an equidigital number, since it uses as much as digits as its factorization.

31067040281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 31067040281 in words is "thirty-one billion, sixty-seven million, forty thousand, two hundred eighty-one".