131421134224 has 20 divisors (see below), whose sum is σ = 256487053644. Its totient is φ = 65230926848.

The previous prime is 131421134213. The next prime is 131421134227. The reversal of 131421134224 is 422431124131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 109150944400 + 22270189824 = 330380^2 + 149232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131421134192 and 131421134201.

It is not an unprimeable number, because it can be changed into a prime (131421134227) 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, 29975257 + ... + 29979640.

Almost surely, 2^131421134224 is an apocalyptic number.

It is an amenable number.

131421134224 is a deficient number, since it is larger than the sum of its proper divisors (125065919420).

131421134224 is a wasteful number, since it uses less digits than its factorization.

131421134224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59955042 (or 59955036 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 131421134224 its reverse (422431124131), we get a palindrome (553852258355).

The spelling of 131421134224 in words is "one hundred thirty-one billion, four hundred twenty-one million, one hundred thirty-four thousand, two hundred twenty-four".