131243031044 has 6 divisors (see below), whose sum is σ = 229675304334. Its totient is φ = 65621515520.

The previous prime is 131243030999. The next prime is 131243031047. The reversal of 131243031044 is 440130342131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 113543389444 + 17699641600 = 336962^2 + 133040^2 .

It is not an unprimeable number, because it can be changed into a prime (131243031047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16405378877 + ... + 16405378884.

It is an arithmetic number, because the mean of its divisors is an integer number (38279217389).

Almost surely, 2^131243031044 is an apocalyptic number.

It is an amenable number.

131243031044 is a deficient number, since it is larger than the sum of its proper divisors (98432273290).

131243031044 is a wasteful number, since it uses less digits than its factorization.

131243031044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32810757765 (or 32810757763 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 131243031044 its reverse (440130342131), we get a palindrome (571373373175).

The spelling of 131243031044 in words is "one hundred thirty-one billion, two hundred forty-three million, thirty-one thousand, forty-four".