1321000323031 has 2 divisors, whose sum is σ = 1321000323032. Its totient is φ = 1321000323030.

The previous prime is 1321000323023. The next prime is 1321000323037. The reversal of 1321000323031 is 1303230001231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321000323031 - 2³ = 1321000323023 is a prime.

It is a super-2 number, since 2×1321000323031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321000323037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660500161515 + 660500161516.

It is an arithmetic number, because the mean of its divisors is an integer number (660500161516).

Almost surely, 2^{1321000323031} is an apocalyptic number.

1321000323031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321000323031 is an equidigital number, since it uses as much as digits as its factorization.

1321000323031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1321000323031 its reverse (1303230001231), we get a palindrome (2624230324262).

The spelling of 1321000323031 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-three thousand, thirty-one".