20130131422 has 16 divisors (see below), whose sum is σ = 31030740720. Its totient is φ = 9786892608.

The previous prime is 20130131401. The next prime is 20130131423. The reversal of 20130131422 is 22413103102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20130131422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130131423) 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 7 ways as a sum of consecutive naturals, for example, 34533 + ... + 203599.

It is an arithmetic number, because the mean of its divisors is an integer number (1939421295).

Almost surely, 2^20130131422 is an apocalyptic number.

20130131422 is a deficient number, since it is larger than the sum of its proper divisors (10900609298).

20130131422 is a wasteful number, since it uses less digits than its factorization.

20130131422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170715.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20130131422 its reverse (22413103102), we get a palindrome (42543234524).

The spelling of 20130131422 in words is "twenty billion, one hundred thirty million, one hundred thirty-one thousand, four hundred twenty-two".