31313202223 has 2 divisors, whose sum is σ = 31313202224. Its totient is φ = 31313202222.

The previous prime is 31313202211. The next prime is 31313202227. The reversal of 31313202223 is 32220231313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31313202223 - 2⁵ = 31313202191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31313202194 and 31313202203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31313202227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656601111 + 15656601112.

It is an arithmetic number, because the mean of its divisors is an integer number (15656601112).

Almost surely, 2^31313202223 is an apocalyptic number.

31313202223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313202223 is an equidigital number, since it uses as much as digits as its factorization.

31313202223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31313202223 its reverse (32220231313), we get a palindrome (63533433536).

The spelling of 31313202223 in words is "thirty-one billion, three hundred thirteen million, two hundred two thousand, two hundred twenty-three".