30131020001321 has 4 divisors (see below), whose sum is σ = 30772105533312. Its totient is φ = 29489934469332.

The previous prime is 30131020001273. The next prime is 30131020001351. The reversal of 30131020001321 is 12310002013103.

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 a cyclic number.

It is not a de Polignac number, because 30131020001321 - 2¹⁴ = 30131019984937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30131020001321.

It is not an unprimeable number, because it can be changed into a prime (30131020001351) 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, 320542765925 + ... + 320542766018.

It is an arithmetic number, because the mean of its divisors is an integer number (7693026383328).

Almost surely, 2^{30131020001321} is an apocalyptic number.

It is an amenable number.

30131020001321 is a deficient number, since it is larger than the sum of its proper divisors (641085531991).

30131020001321 is an equidigital number, since it uses as much as digits as its factorization.

30131020001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641085531990.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30131020001321 its reverse (12310002013103), we get a palindrome (42441022014424).

The spelling of 30131020001321 in words is "thirty trillion, one hundred thirty-one billion, twenty million, one thousand, three hundred twenty-one".