27700310531 has 4 divisors (see below), whose sum is σ = 27703275864. Its totient is φ = 27697345200.

The previous prime is 27700310513. The next prime is 27700310581. The reversal of 27700310531 is 13501300772.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27700310531 is a prime.

It is a super-2 number, since 2×27700310531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27700310494 and 27700310503.

It is not an unprimeable number, because it can be changed into a prime (27700310581) 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, 1468610 + ... + 1487351.

It is an arithmetic number, because the mean of its divisors is an integer number (6925818966).

Almost surely, 2^27700310531 is an apocalyptic number.

27700310531 is a deficient number, since it is larger than the sum of its proper divisors (2965333).

27700310531 is an equidigital number, since it uses as much as digits as its factorization.

27700310531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965332.

The product of its (nonzero) digits is 4410, while the sum is 29.

The spelling of 27700310531 in words is "twenty-seven billion, seven hundred million, three hundred ten thousand, five hundred thirty-one".