271138931 has 4 divisors (see below), whose sum is σ = 309873072. Its totient is φ = 232404792.

The previous prime is 271138919. The next prime is 271138939. The reversal of 271138931 is 139831172.

It is a happy number.

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-271138931 is a prime.

It is a super-2 number, since 2×271138931² = 147032639807645522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 271138891 and 271138900.

It is not an unprimeable number, because it can be changed into a prime (271138939) 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, 19367060 + ... + 19367073.

It is an arithmetic number, because the mean of its divisors is an integer number (77468268).

Almost surely, 2^271138931 is an apocalyptic number.

271138931 is a deficient number, since it is larger than the sum of its proper divisors (38734141).

271138931 is an equidigital number, since it uses as much as digits as its factorization.

271138931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38734140.

The product of its digits is 9072, while the sum is 35.

The square root of 271138931 is about 16466.2968210828. The cubic root of 271138931 is about 647.2379293532.

The spelling of 271138931 in words is "two hundred seventy-one million, one hundred thirty-eight thousand, nine hundred thirty-one".