31432220014321 has 4 divisors (see below), whose sum is σ = 35922537159232. Its totient is φ = 26941902869412.

The previous prime is 31432220014303. The next prime is 31432220014331. The reversal of 31432220014321 is 12341002223413.

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 31432220014321 - 2²⁵ = 31432186459889 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 31432220014321.

It is not an unprimeable number, because it can be changed into a prime (31432220014301) 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, 2245158572445 + ... + 2245158572458.

It is an arithmetic number, because the mean of its divisors is an integer number (8980634289808).

Almost surely, 2^{31432220014321} is an apocalyptic number.

It is an amenable number.

31432220014321 is a deficient number, since it is larger than the sum of its proper divisors (4490317144911).

31432220014321 is an equidigital number, since it uses as much as digits as its factorization.

31432220014321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490317144910.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31432220014321 its reverse (12341002223413), we get a palindrome (43773222237734).

The spelling of 31432220014321 in words is "thirty-one trillion, four hundred thirty-two billion, two hundred twenty million, fourteen thousand, three hundred twenty-one".