20131031310322 has 8 divisors (see below), whose sum is σ = 31012669856556. Its totient is φ = 9793474691472.

The previous prime is 20131031310259. The next prime is 20131031310331. The reversal of 20131031310322 is 22301313013102.

It can be written as a sum of positive squares in 2 ways, for example, as 19250603777601 + 880427532721 = 4387551^2 + 938311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20131031310293 and 20131031310302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136020481753 + ... + 136020481900.

Almost surely, 2^{20131031310322} is an apocalyptic number.

20131031310322 is a deficient number, since it is larger than the sum of its proper divisors (10881638546234).

20131031310322 is a wasteful number, since it uses less digits than its factorization.

20131031310322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272040963692.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20131031310322 its reverse (22301313013102), we get a palindrome (42432344323424).

The spelling of 20131031310322 in words is "twenty trillion, one hundred thirty-one billion, thirty-one million, three hundred ten thousand, three hundred twenty-two".