31223233049 has 2 divisors, whose sum is σ = 31223233050. Its totient is φ = 31223233048.

The previous prime is 31223232977. The next prime is 31223233087. The reversal of 31223233049 is 94033232213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29230057024 + 1993176025 = 170968^2 + 44645^2 .

It is an emirp because it is prime and its reverse (94033232213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31223233049 - 2³² = 26928265753 is a prime.

It is not a weakly prime, because it can be changed into another prime (31223233949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611616524 + 15611616525.

It is an arithmetic number, because the mean of its divisors is an integer number (15611616525).

Almost surely, 2^31223233049 is an apocalyptic number.

It is an amenable number.

31223233049 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223233049 is an equidigital number, since it uses as much as digits as its factorization.

31223233049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 31223233049 in words is "thirty-one billion, two hundred twenty-three million, two hundred thirty-three thousand, forty-nine".