131368998972287 has 4 divisors (see below), whose sum is σ = 135898964454120. Its totient is φ = 126839033490456.

The previous prime is 131368998972257. The next prime is 131368998972317. The reversal of 131368998972287 is 782279899863131.

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

It is an interprime number because it is at equal distance from previous prime (131368998972257) and next prime (131368998972317).

It is a cyclic number.

It is not a de Polignac number, because 131368998972287 - 2¹⁶ = 131368998906751 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 (131368998972257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2264982740873 + ... + 2264982740930.

It is an arithmetic number, because the mean of its divisors is an integer number (33974741113530).

Almost surely, 2^{131368998972287} is an apocalyptic number.

131368998972287 is a deficient number, since it is larger than the sum of its proper divisors (4529965481833).

131368998972287 is an equidigital number, since it uses as much as digits as its factorization.

131368998972287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529965481832.

The product of its digits is 3950456832, while the sum is 83.

The spelling of 131368998972287 in words is "one hundred thirty-one trillion, three hundred sixty-eight billion, nine hundred ninety-eight million, nine hundred seventy-two thousand, two hundred eighty-seven".