131421626 has 24 divisors (see below), whose sum is σ = 230234400. Its totient is φ = 56098392.

The previous prime is 131421623. The next prime is 131421637. The reversal of 131421626 is 626124131.

131421626 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 131421595 and 131421604.

It is not an unprimeable number, because it can be changed into a prime (131421623) 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 11 ways as a sum of consecutive naturals, for example, 23225 + ... + 28323.

It is an arithmetic number, because the mean of its divisors is an integer number (9593100).

Almost surely, 2^131421626 is an apocalyptic number.

131421626 is a deficient number, since it is larger than the sum of its proper divisors (98812774).

131421626 is a wasteful number, since it uses less digits than its factorization.

131421626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5378 (or 5371 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 131421626 is about 11463.9271630624. The cubic root of 131421626 is about 508.4195930896.

Adding to 131421626 its reverse (626124131), we get a palindrome (757545757).

The spelling of 131421626 in words is "one hundred thirty-one million, four hundred twenty-one thousand, six hundred twenty-six".