31200042022422 has 48 divisors (see below), whose sum is σ = 78171533867952. Its totient is φ = 8228582510400.

The previous prime is 31200042022421. The next prime is 31200042022441. The reversal of 31200042022422 is 22422024000213.

It is a junction number, because it is equal to n+sod(n) for n = 31200042022392 and 31200042022401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200042022421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4081634329 + ... + 4081641972.

It is an arithmetic number, because the mean of its divisors is an integer number (1628573622249).

Almost surely, 2^{31200042022422} is an apocalyptic number.

31200042022422 is an abundant number, since it is smaller than the sum of its proper divisors (46971491845530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31200042022422 is a wasteful number, since it uses less digits than its factorization.

31200042022422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8163276333 (or 8163276326 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 31200042022422 its reverse (22422024000213), we get a palindrome (53622066022635).

The spelling of 31200042022422 in words is "thirty-one trillion, two hundred billion, forty-two million, twenty-two thousand, four hundred twenty-two".