131330630305 has 40 divisors (see below), whose sum is σ = 188336842344. Its totient is φ = 87858489600.

The previous prime is 131330630279. The next prime is 131330630311. The reversal of 131330630305 is 503036033131.

It can be written as a sum of positive squares in 4 ways, for example, as 986525281 + 130344105024 = 31409^2 + 361032^2 .

It is not a de Polignac number, because 131330630305 - 2²⁵ = 131297075873 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 358795 + ... + 625615.

Almost surely, 2^131330630305 is an apocalyptic number.

It is an amenable number.

131330630305 is a deficient number, since it is larger than the sum of its proper divisors (57006212039).

131330630305 is an frugal number, since it uses more digits than its factorization.

131330630305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266895 (or 266874 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 28.

Adding to 131330630305 its reverse (503036033131), we get a palindrome (634366663436).

The spelling of 131330630305 in words is "one hundred thirty-one billion, three hundred thirty million, six hundred thirty thousand, three hundred five".