31093197 has 4 divisors (see below), whose sum is σ = 41457600. Its totient is φ = 20728796.

The previous prime is 31093169. The next prime is 31093201. The reversal of 31093197 is 79139013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79139013 = 3 ⋅26379671.

It is a cyclic number.

It is not a de Polignac number, because 31093197 - 2¹² = 31089101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31093157) 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, 5182197 + ... + 5182202.

It is an arithmetic number, because the mean of its divisors is an integer number (10364400).

Almost surely, 2^31093197 is an apocalyptic number.

It is an amenable number.

31093197 is a deficient number, since it is larger than the sum of its proper divisors (10364403).

31093197 is a wasteful number, since it uses less digits than its factorization.

31093197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10364402.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 31093197 is about 5576.1274196345. The cubic root of 31093197 is about 314.4525537921.

The spelling of 31093197 in words is "thirty-one million, ninety-three thousand, one hundred ninety-seven".