101231197 has 4 divisors (see below), whose sum is σ = 102947040. Its totient is φ = 99515356.

The previous prime is 101231191. The next prime is 101231227. The reversal of 101231197 is 791132101.

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: 791132101 = 337 ⋅2347573.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101231197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101231191) 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, 857833 + ... + 857950.

It is an arithmetic number, because the mean of its divisors is an integer number (25736760).

Almost surely, 2^101231197 is an apocalyptic number.

It is an amenable number.

101231197 is a deficient number, since it is larger than the sum of its proper divisors (1715843).

101231197 is an equidigital number, since it uses as much as digits as its factorization.

101231197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715842.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 101231197 is about 10061.3715267850. The cubic root of 101231197 is about 466.0560221104.

Adding to 101231197 its reverse (791132101), we get a palindrome (892363298).

The spelling of 101231197 in words is "one hundred one million, two hundred thirty-one thousand, one hundred ninety-seven".