31430321013321 has 12 divisors (see below), whose sum is σ = 45399692793780. Its totient is φ = 20953390318080.

The previous prime is 31430321013319. The next prime is 31430321013337. The reversal of 31430321013321 is 12331012303413.

31430321013321 is a `hidden beast` number, since 3 + 1 + 4 + 3 + 0 + 321 + 0 + 1 + 332 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20059694228025 + 11370626785296 = 4478805^2 + 3372036^2 .

It is not a de Polignac number, because 31430321013321 - 2¹ = 31430321013319 is a prime.

It is a super-2 number, since 2×31430321013321² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31430321013521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11811120 + ... + 14225441.

It is an arithmetic number, because the mean of its divisors is an integer number (3783307732815).

Almost surely, 2^{31430321013321} is an apocalyptic number.

It is an amenable number.

31430321013321 is a deficient number, since it is larger than the sum of its proper divisors (13969371780459).

31430321013321 is a wasteful number, since it uses less digits than its factorization.

31430321013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26170696 (or 26170693 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31430321013321 its reverse (12331012303413), we get a palindrome (43761333316734).

The spelling of 31430321013321 in words is "thirty-one trillion, four hundred thirty billion, three hundred twenty-one million, thirteen thousand, three hundred twenty-one".