31201214243 has 2 divisors, whose sum is σ = 31201214244. Its totient is φ = 31201214242.

The previous prime is 31201214237. The next prime is 31201214263. The reversal of 31201214243 is 34241210213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31201214243 - 2¹⁸ = 31200952099 is a prime.

It is not a weakly prime, because it can be changed into another prime (31201214203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600607121 + 15600607122.

It is an arithmetic number, because the mean of its divisors is an integer number (15600607122).

Almost surely, 2^31201214243 is an apocalyptic number.

31201214243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31201214243 is an equidigital number, since it uses as much as digits as its factorization.

31201214243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31201214243 its reverse (34241210213), we get a palindrome (65442424456).

The spelling of 31201214243 in words is "thirty-one billion, two hundred one million, two hundred fourteen thousand, two hundred forty-three".