31023200231321 has 2 divisors, whose sum is σ = 31023200231322. Its totient is φ = 31023200231320.

The previous prime is 31023200231279. The next prime is 31023200231333. The reversal of 31023200231321 is 12313200232013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29432675685721 + 1590524545600 = 5425189^2 + 1261160^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023200231321 - 2³⁴ = 31006020362137 is a prime.

It is not a weakly prime, because it can be changed into another prime (31023200234321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511600115660 + 15511600115661.

It is an arithmetic number, because the mean of its divisors is an integer number (15511600115661).

Almost surely, 2^{31023200231321} is an apocalyptic number.

It is an amenable number.

31023200231321 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023200231321 is an equidigital number, since it uses as much as digits as its factorization.

31023200231321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31023200231321 its reverse (12313200232013), we get a palindrome (43336400463334).

The spelling of 31023200231321 in words is "thirty-one trillion, twenty-three billion, two hundred million, two hundred thirty-one thousand, three hundred twenty-one".