131544520222 has 4 divisors (see below), whose sum is σ = 197316780336. Its totient is φ = 65772260110.

The previous prime is 131544520193. The next prime is 131544520229. The reversal of 131544520222 is 222025445131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131544520229) 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 as a sum of consecutive naturals, namely, 32886130054 + ... + 32886130057.

It is an arithmetic number, because the mean of its divisors is an integer number (49329195084).

Almost surely, 2^131544520222 is an apocalyptic number.

131544520222 is a deficient number, since it is larger than the sum of its proper divisors (65772260114).

131544520222 is an equidigital number, since it uses as much as digits as its factorization.

131544520222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65772260113.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 131544520222 its reverse (222025445131), we get a palindrome (353569965353).

The spelling of 131544520222 in words is "one hundred thirty-one billion, five hundred forty-four million, five hundred twenty thousand, two hundred twenty-two".