1020321213031 has 8 divisors (see below), whose sum is σ = 1025475323904. Its totient is φ = 1015180004760.

The previous prime is 1020321213019. The next prime is 1020321213049. The reversal of 1020321213031 is 1303121230201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020321213031 - 2²³ = 1020312824423 is a prime.

It is a super-2 number, since 2×1020321213031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020321213001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3067075 + ... + 3383428.

It is an arithmetic number, because the mean of its divisors is an integer number (128184415488).

Almost surely, 2^{1020321213031} is an apocalyptic number.

1020321213031 is a deficient number, since it is larger than the sum of its proper divisors (5154110873).

1020321213031 is an equidigital number, since it uses as much as digits as its factorization.

1020321213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451301.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1020321213031 its reverse (1303121230201), we get a palindrome (2323442443232).

The spelling of 1020321213031 in words is "one trillion, twenty billion, three hundred twenty-one million, two hundred thirteen thousand, thirty-one".