12197931 has 8 divisors (see below), whose sum is σ = 16372224. Its totient is φ = 8077800.

The previous prime is 12197921. The next prime is 12197947. The reversal of 12197931 is 13979121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12197931 - 2¹⁸ = 11935787 is a prime.

It is a super-2 number, since 2×12197931² = 297579041361522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12197892 and 12197901.

It is not an unprimeable number, because it can be changed into a prime (12197921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13011 + ... + 13916.

It is an arithmetic number, because the mean of its divisors is an integer number (2046528).

Almost surely, 2^12197931 is an apocalyptic number.

12197931 is a deficient number, since it is larger than the sum of its proper divisors (4174293).

12197931 is a wasteful number, since it uses less digits than its factorization.

12197931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27081.

The product of its digits is 3402, while the sum is 33.

The square root of 12197931 is about 3492.5536502680. The cubic root of 12197931 is about 230.1947374038.

The spelling of 12197931 in words is "twelve million, one hundred ninety-seven thousand, nine hundred thirty-one".