1020321031213 has 16 divisors (see below), whose sum is σ = 1179157132800. Its totient is φ = 872554176000.

The previous prime is 1020321031207. The next prime is 1020321031229. The reversal of 1020321031213 is 3121301230201.

It is a cyclic number.

It is not a de Polignac number, because 1020321031213 - 2²⁹ = 1019784160301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020321031013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033488 + ... + 1763161.

It is an arithmetic number, because the mean of its divisors is an integer number (73697320800).

Almost surely, 2^{1020321031213} is an apocalyptic number.

It is an amenable number.

1020321031213 is a deficient number, since it is larger than the sum of its proper divisors (158836101587).

1020321031213 is a wasteful number, since it uses less digits than its factorization.

1020321031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798628.

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

Adding to 1020321031213 its reverse (3121301230201), we get a palindrome (4141622261414).

The spelling of 1020321031213 in words is "one trillion, twenty billion, three hundred twenty-one million, thirty-one thousand, two hundred thirteen".