31093427 has 4 divisors (see below), whose sum is σ = 31557576. Its totient is φ = 30629280.

The previous prime is 31093417. The next prime is 31093471. The reversal of 31093427 is 72439013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72439013 = 29 ⋅2497897.

It is a cyclic number.

It is not a de Polignac number, because 31093427 - 2¹⁴ = 31077043 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 31093427.

It is not an unprimeable number, because it can be changed into a prime (31093417) 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, 231974 + ... + 232107.

It is an arithmetic number, because the mean of its divisors is an integer number (7889394).

Almost surely, 2^31093427 is an apocalyptic number.

31093427 is a deficient number, since it is larger than the sum of its proper divisors (464149).

31093427 is an equidigital number, since it uses as much as digits as its factorization.

31093427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464148.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 31093427 is about 5576.1480432284. The cubic root of 31093427 is about 314.4533291376.

The spelling of 31093427 in words is "thirty-one million, ninety-three thousand, four hundred twenty-seven".