1306511334131 has 4 divisors (see below), whose sum is σ = 1306649877264. Its totient is φ = 1306372791000.

The previous prime is 1306511334127. The next prime is 1306511334229. The reversal of 1306511334131 is 1314331156031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1306511334131 - 2² = 1306511334127 is a prime.

It is a super-2 number, since 2×1306511334131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306511334431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 69257420 + ... + 69276281.

It is an arithmetic number, because the mean of its divisors is an integer number (326662469316).

Almost surely, 2^{1306511334131} is an apocalyptic number.

1306511334131 is a deficient number, since it is larger than the sum of its proper divisors (138543133).

1306511334131 is an equidigital number, since it uses as much as digits as its factorization.

1306511334131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138543132.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 1306511334131 in words is "one trillion, three hundred six billion, five hundred eleven million, three hundred thirty-four thousand, one hundred thirty-one".