31321223002019 has 2 divisors, whose sum is σ = 31321223002020. Its totient is φ = 31321223002018.

The previous prime is 31321223001997. The next prime is 31321223002049. The reversal of 31321223002019 is 91020032212313.

It is a weak prime.

It is an emirp because it is prime and its reverse (91020032212313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31321223002019 - 2¹² = 31321222997923 is a prime.

It is a super-2 number, since 2×31321223002019² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31321223001982 and 31321223002000.

It is not a weakly prime, because it can be changed into another prime (31321223002049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660611501009 + 15660611501010.

It is an arithmetic number, because the mean of its divisors is an integer number (15660611501010).

Almost surely, 2^{31321223002019} is an apocalyptic number.

31321223002019 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321223002019 is an equidigital number, since it uses as much as digits as its factorization.

31321223002019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 31321223002019 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, two thousand, nineteen".