1012321031 has 2 divisors, whose sum is σ = 1012321032. Its totient is φ = 1012321030.

The previous prime is 1012321001. The next prime is 1012321033. The reversal of 1012321031 is 1301232101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012321031 - 2¹⁴ = 1012304647 is a prime.

It is a super-2 number, since 2×1012321031² = 2049587739609805922, which contains 22 as substring.

Together with 1012321033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012320997 and 1012321015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012321033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506160515 + 506160516.

It is an arithmetic number, because the mean of its divisors is an integer number (506160516).

Almost surely, 2^1012321031 is an apocalyptic number.

1012321031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012321031 is an equidigital number, since it uses as much as digits as its factorization.

1012321031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1012321031 is about 31816.9928025890. The cubic root of 1012321031 is about 1004.0902573181.

Adding to 1012321031 its reverse (1301232101), we get a palindrome (2313553132).

The spelling of 1012321031 in words is "one billion, twelve million, three hundred twenty-one thousand, thirty-one".