131313305066 has 16 divisors (see below), whose sum is σ = 199201203720. Its totient is φ = 64913038080.

The previous prime is 131313305047. The next prime is 131313305107. The reversal of 131313305066 is 660503313131.

It can be written as a sum of positive squares in 4 ways, for example, as 73696503841 + 57616801225 = 271471^2 + 240035^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2443526 + ... + 2496686.

Almost surely, 2^131313305066 is an apocalyptic number.

131313305066 is a deficient number, since it is larger than the sum of its proper divisors (67887898654).

131313305066 is a wasteful number, since it uses less digits than its factorization.

131313305066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67129.

The product of its (nonzero) digits is 14580, while the sum is 32.

Adding to 131313305066 its reverse (660503313131), we get a palindrome (791816618197).

The spelling of 131313305066 in words is "one hundred thirty-one billion, three hundred thirteen million, three hundred five thousand, sixty-six".