31264172243 has 2 divisors, whose sum is σ = 31264172244. Its totient is φ = 31264172242.

The previous prime is 31264172189. The next prime is 31264172249. The reversal of 31264172243 is 34227146213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31264172243 - 2¹⁴ = 31264155859 is a prime.

It is not a weakly prime, because it can be changed into another prime (31264172249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15632086121 + 15632086122.

It is an arithmetic number, because the mean of its divisors is an integer number (15632086122).

Almost surely, 2^31264172243 is an apocalyptic number.

31264172243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31264172243 is an equidigital number, since it uses as much as digits as its factorization.

31264172243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 35.

The spelling of 31264172243 in words is "thirty-one billion, two hundred sixty-four million, one hundred seventy-two thousand, two hundred forty-three".