31222654849 has 2 divisors, whose sum is σ = 31222654850. Its totient is φ = 31222654848.

The previous prime is 31222654843. The next prime is 31222654871. The reversal of 31222654849 is 94845622213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20969067249 + 10253587600 = 144807^2 + 101260^2 .

It is a cyclic number.

It is not a de Polignac number, because 31222654849 - 2⁵ = 31222654817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31222654799 and 31222654808.

It is not a weakly prime, because it can be changed into another prime (31222654843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611327424 + 15611327425.

It is an arithmetic number, because the mean of its divisors is an integer number (15611327425).

Almost surely, 2^31222654849 is an apocalyptic number.

It is an amenable number.

31222654849 is a deficient number, since it is larger than the sum of its proper divisors (1).

31222654849 is an equidigital number, since it uses as much as digits as its factorization.

31222654849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 46.

The spelling of 31222654849 in words is "thirty-one billion, two hundred twenty-two million, six hundred fifty-four thousand, eight hundred forty-nine".