31127 has 4 divisors (see below), whose sum is σ = 32976. Its totient is φ = 29280.

The previous prime is 31123. The next prime is 31139. The reversal of 31127 is 72113.

31127 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72113 = 37 ⋅1949.

It is a cyclic number.

It is not a de Polignac number, because 31127 - 2² = 31123 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121) 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, 899 + ... + 932.

It is an arithmetic number, because the mean of its divisors is an integer number (8244).

2³¹¹²⁷ is an apocalyptic number.

31127 is a deficient number, since it is larger than the sum of its proper divisors (1849).

31127 is a wasteful number, since it uses less digits than its factorization.

31127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848.

The product of its digits is 42, while the sum is 14.

The square root of 31127 is about 176.4284557547. The cubic root of 31127 is about 31.4566464991.

Subtracting from 31127 its sum of digits (14), we obtain a palindrome (31113).

The spelling of 31127 in words is "thirty-one thousand, one hundred twenty-seven".