131564353444 has 12 divisors (see below), whose sum is σ = 230241287500. Its totient is φ = 65781128448.

The previous prime is 131564353409. The next prime is 131564353451. The reversal of 131564353444 is 444353465131.

It can be written as a sum of positive squares in 2 ways, for example, as 115353971044 + 16210382400 = 339638^2 + 127320^2 .

It is a super-4 number, since 4×131564353444⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 131564353444.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65932 + ... + 517180.

Almost surely, 2^131564353444 is an apocalyptic number.

It is an amenable number.

131564353444 is a deficient number, since it is larger than the sum of its proper divisors (98676934056).

131564353444 is a wasteful number, since it uses less digits than its factorization.

131564353444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524142 (or 524140 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 43.

The spelling of 131564353444 in words is "one hundred thirty-one billion, five hundred sixty-four million, three hundred fifty-three thousand, four hundred forty-four".