7316781522131 has 8 divisors (see below), whose sum is σ = 7487153760240. Its totient is φ = 7146419035392.

The previous prime is 7316781522079. The next prime is 7316781522179. The reversal of 7316781522131 is 1312251876137.

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

It is a cyclic number.

It is not a de Polignac number, because 7316781522131 - 2³⁰ = 7315707780307 is a prime.

It is a super-2 number, since 2×7316781522131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7316781522031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908666 + ... + 3931823.

It is an arithmetic number, because the mean of its divisors is an integer number (935894220030).

Almost surely, 2^{7316781522131} is an apocalyptic number.

7316781522131 is a deficient number, since it is larger than the sum of its proper divisors (170372238109).

7316781522131 is a wasteful number, since it uses less digits than its factorization.

7316781522131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875685.

The product of its digits is 423360, while the sum is 47.

The spelling of 7316781522131 in words is "seven trillion, three hundred sixteen billion, seven hundred eighty-one million, five hundred twenty-two thousand, one hundred thirty-one".