231131010101 has 4 divisors (see below), whose sum is σ = 231137894400. Its totient is φ = 231124125804.

The previous prime is 231131010083. The next prime is 231131010161. The reversal of 231131010101 is 101010131132.

It is a happy number.

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 231131010101 - 2⁶ = 231131010037 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 (231131010161) 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, 3391541 + ... + 3459018.

It is an arithmetic number, because the mean of its divisors is an integer number (57784473600).

Almost surely, 2^231131010101 is an apocalyptic number.

It is an amenable number.

231131010101 is a deficient number, since it is larger than the sum of its proper divisors (6884299).

231131010101 is an equidigital number, since it uses as much as digits as its factorization.

231131010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884298.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 231131010101 its reverse (101010131132), we get a palindrome (332141141233).

The spelling of 231131010101 in words is "two hundred thirty-one billion, one hundred thirty-one million, ten thousand, one hundred one".