131864221426 has 16 divisors (see below), whose sum is σ = 226057728960. Its totient is φ = 56512043280.

The previous prime is 131864221403. The next prime is 131864221429. The reversal of 131864221426 is 624122468131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131864221429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1023036 + ... + 1144696.

It is an arithmetic number, because the mean of its divisors is an integer number (14128608060).

Almost surely, 2^131864221426 is an apocalyptic number.

131864221426 is a deficient number, since it is larger than the sum of its proper divisors (94193507534).

131864221426 is a wasteful number, since it uses less digits than its factorization.

131864221426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199089.

The product of its digits is 110592, while the sum is 40.

Adding to 131864221426 its reverse (624122468131), we get a palindrome (755986689557).

The spelling of 131864221426 in words is "one hundred thirty-one billion, eight hundred sixty-four million, two hundred twenty-one thousand, four hundred twenty-six".