131512344727 has 4 divisors (see below), whose sum is σ = 131567814136. Its totient is φ = 131456875320.

The previous prime is 131512344701. The next prime is 131512344829. The reversal of 131512344727 is 727443215131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727443215131 = 1201 ⋅605697931.

It is a cyclic number.

It is not a de Polignac number, because 131512344727 - 2¹¹ = 131512342679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131512344727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131512344527) 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, 27731148 + ... + 27735889.

It is an arithmetic number, because the mean of its divisors is an integer number (32891953534).

Almost surely, 2^131512344727 is an apocalyptic number.

131512344727 is a deficient number, since it is larger than the sum of its proper divisors (55469409).

131512344727 is an equidigital number, since it uses as much as digits as its factorization.

131512344727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55469408.

The product of its digits is 141120, while the sum is 40.

Adding to 131512344727 its reverse (727443215131), we get a palindrome (858955559858).

The spelling of 131512344727 in words is "one hundred thirty-one billion, five hundred twelve million, three hundred forty-four thousand, seven hundred twenty-seven".