1021320102031 has 4 divisors (see below), whose sum is σ = 1046230348464. Its totient is φ = 996409855600.

The previous prime is 1021320102013. The next prime is 1021320102043. The reversal of 1021320102031 is 1302010231201.

1021320102031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021320102031 - 2¹¹ = 1021320099983 is a prime.

It is a super-2 number, since 2×1021320102031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021320101996 and 1021320102014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021320102931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12455123155 + ... + 12455123236.

It is an arithmetic number, because the mean of its divisors is an integer number (261557587116).

Almost surely, 2^{1021320102031} is an apocalyptic number.

1021320102031 is a deficient number, since it is larger than the sum of its proper divisors (24910246433).

1021320102031 is an equidigital number, since it uses as much as digits as its factorization.

1021320102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24910246432.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1021320102031 its reverse (1302010231201), we get a palindrome (2323330333232).

The spelling of 1021320102031 in words is "one trillion, twenty-one billion, three hundred twenty million, one hundred two thousand, thirty-one".