31244644243 has 2 divisors, whose sum is σ = 31244644244. Its totient is φ = 31244644242.

The previous prime is 31244644241. The next prime is 31244644273. The reversal of 31244644243 is 34244644213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31244644243 - 2¹ = 31244644241 is a prime.

Together with 31244644241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31244644241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15622322121 + 15622322122.

It is an arithmetic number, because the mean of its divisors is an integer number (15622322122).

Almost surely, 2^31244644243 is an apocalyptic number.

31244644243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244644243 is an equidigital number, since it uses as much as digits as its factorization.

31244644243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 37.

The spelling of 31244644243 in words is "thirty-one billion, two hundred forty-four million, six hundred forty-four thousand, two hundred forty-three".