231203101 has 4 divisors (see below), whose sum is σ = 231251104. Its totient is φ = 231155100.

The previous prime is 231203087. The next prime is 231203117. The reversal of 231203101 is 101302132.

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.

It is a cyclic number.

It is not a de Polignac number, because 231203101 - 2⁵ = 231203069 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 (231203171) 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, 15855 + ... + 26716.

It is an arithmetic number, because the mean of its divisors is an integer number (57812776).

Almost surely, 2^231203101 is an apocalyptic number.

It is an amenable number.

231203101 is a deficient number, since it is larger than the sum of its proper divisors (48003).

231203101 is an equidigital number, since it uses as much as digits as its factorization.

231203101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48002.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231203101 is about 15205.3642179331. The cubic root of 231203101 is about 613.7590160488.

Adding to 231203101 its reverse (101302132), we get a palindrome (332505233).

The spelling of 231203101 in words is "two hundred thirty-one million, two hundred three thousand, one hundred one".