231032101 has 2 divisors, whose sum is σ = 231032102. Its totient is φ = 231032100.

The previous prime is 231032093. The next prime is 231032161. The reversal of 231032101 is 101230132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231009601 + 22500 = 15199^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 231032101 - 2³ = 231032093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231032161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115516050 + 115516051.

It is an arithmetic number, because the mean of its divisors is an integer number (115516051).

Almost surely, 2^231032101 is an apocalyptic number.

It is an amenable number.

231032101 is a deficient number, since it is larger than the sum of its proper divisors (1).

231032101 is an equidigital number, since it uses as much as digits as its factorization.

231032101 is an odious number, because the sum of its binary digits is odd.

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

The square root of 231032101 is about 15199.7401622528. The cubic root of 231032101 is about 613.6076647382.

Adding to 231032101 its reverse (101230132), we get a palindrome (332262233).

The spelling of 231032101 in words is "two hundred thirty-one million, thirty-two thousand, one hundred one".