131264480309 has 8 divisors (see below), whose sum is σ = 135104620728. Its totient is φ = 127439732160.

The previous prime is 131264480273. The next prime is 131264480327. The reversal of 131264480309 is 903084462131.

It can be written as a sum of positive squares in 4 ways, for example, as 38374851025 + 92889629284 = 195895^2 + 304778^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131264480309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131264480209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3830762 + ... + 3864875.

It is an arithmetic number, because the mean of its divisors is an integer number (16888077591).

Almost surely, 2^131264480309 is an apocalyptic number.

It is an amenable number.

131264480309 is a deficient number, since it is larger than the sum of its proper divisors (3840140419).

131264480309 is an equidigital number, since it uses as much as digits as its factorization.

131264480309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696135.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 131264480309 in words is "one hundred thirty-one billion, two hundred sixty-four million, four hundred eighty thousand, three hundred nine".