131400420122 has 16 divisors (see below), whose sum is σ = 202937613000. Its totient is φ = 63763495488.

The previous prime is 131400420083. The next prime is 131400420127. The reversal of 131400420122 is 221024004131.

It can be written as a sum of positive squares in 4 ways, for example, as 130856551081 + 543869041 = 361741^2 + 23321^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131400420094 and 131400420103.

It is not an unprimeable number, because it can be changed into a prime (131400420127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2206997 + ... + 2265752.

Almost surely, 2^131400420122 is an apocalyptic number.

131400420122 is a deficient number, since it is larger than the sum of its proper divisors (71537192878).

131400420122 is a wasteful number, since it uses less digits than its factorization.

131400420122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473185.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 131400420122 its reverse (221024004131), we get a palindrome (352424424253).

The spelling of 131400420122 in words is "one hundred thirty-one billion, four hundred million, four hundred twenty thousand, one hundred twenty-two".