27731845131 has 8 divisors (see below), whose sum is σ = 38583436800. Its totient is φ = 17684075112.

The previous prime is 27731845129. The next prime is 27731845231. The reversal of 27731845131 is 13154813772.

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

It is not a de Polignac number, because 27731845131 - 2¹ = 27731845129 is a prime.

It is a super-2 number, since 2×27731845131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27731845231) 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, 200955331 + ... + 200955468.

It is an arithmetic number, because the mean of its divisors is an integer number (4822929600).

Almost surely, 2^27731845131 is an apocalyptic number.

27731845131 is a deficient number, since it is larger than the sum of its proper divisors (10851591669).

27731845131 is a wasteful number, since it uses less digits than its factorization.

27731845131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401910825.

The product of its digits is 141120, while the sum is 42.

The spelling of 27731845131 in words is "twenty-seven billion, seven hundred thirty-one million, eight hundred forty-five thousand, one hundred thirty-one".