31420303321331 has 4 divisors (see below), whose sum is σ = 32269500708432. Its totient is φ = 30571105934232.

The previous prime is 31420303321301. The next prime is 31420303321399. The reversal of 31420303321331 is 13312330302413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31420303321331 is a prime.

It is a super-2 number, since 2×31420303321331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31420303321294 and 31420303321303.

It is not an unprimeable number, because it can be changed into a prime (31420303321301) 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, 424598693495 + ... + 424598693568.

It is an arithmetic number, because the mean of its divisors is an integer number (8067375177108).

Almost surely, 2^{31420303321331} is an apocalyptic number.

31420303321331 is a deficient number, since it is larger than the sum of its proper divisors (849197387101).

31420303321331 is an equidigital number, since it uses as much as digits as its factorization.

31420303321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849197387100.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31420303321331 its reverse (13312330302413), we get a palindrome (44732633623744).

The spelling of 31420303321331 in words is "thirty-one trillion, four hundred twenty billion, three hundred three million, three hundred twenty-one thousand, three hundred thirty-one".