1031020201321 has 4 divisors (see below), whose sum is σ = 1124749310544. Its totient is φ = 937291092100.

The previous prime is 1031020201319. The next prime is 1031020201361. The reversal of 1031020201321 is 1231020201301.

1031020201321 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1031020201321 - 2¹ = 1031020201319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031020201295 and 1031020201304.

It is not an unprimeable number, because it can be changed into a prime (1031020201361) 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, 46864554595 + ... + 46864554616.

It is an arithmetic number, because the mean of its divisors is an integer number (281187327636).

Almost surely, 2^{1031020201321} is an apocalyptic number.

1031020201321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1031020201321 is a deficient number, since it is larger than the sum of its proper divisors (93729109223).

1031020201321 is an equidigital number, since it uses as much as digits as its factorization.

1031020201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93729109222.

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

Adding to 1031020201321 its reverse (1231020201301), we get a palindrome (2262040402622).

The spelling of 1031020201321 in words is "one trillion, thirty-one billion, twenty million, two hundred one thousand, three hundred twenty-one".