131004426568 has 8 divisors (see below), whose sum is σ = 245633299830. Its totient is φ = 65502213280.

The previous prime is 131004426541. The next prime is 131004426601. The reversal of 131004426568 is 865624400131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 129759889284 + 1244537284 = 360222^2 + 35278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 131004426568.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8187776653 + ... + 8187776668.

Almost surely, 2^131004426568 is an apocalyptic number.

It is an amenable number.

131004426568 is a deficient number, since it is larger than the sum of its proper divisors (114628873262).

131004426568 is a wasteful number, since it uses less digits than its factorization.

131004426568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16375553327 (or 16375553323 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 131004426568 its reverse (865624400131), we get a palindrome (996628826699).

The spelling of 131004426568 in words is "one hundred thirty-one billion, four million, four hundred twenty-six thousand, five hundred sixty-eight".