231015101 has 2 divisors, whose sum is σ = 231015102. Its totient is φ = 231015100.

The previous prime is 231015097. The next prime is 231015107. The reversal of 231015101 is 101510132.

231015101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164608900 + 66406201 = 12830^2 + 8149^2 .

It is a cyclic number.

It is not a de Polignac number, because 231015101 - 2² = 231015097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231015107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115507550 + 115507551.

It is an arithmetic number, because the mean of its divisors is an integer number (115507551).

Almost surely, 2^231015101 is an apocalyptic number.

It is an amenable number.

231015101 is a deficient number, since it is larger than the sum of its proper divisors (1).

231015101 is an equidigital number, since it uses as much as digits as its factorization.

231015101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 231015101 is about 15199.1809318792. The cubic root of 231015101 is about 613.5926140358.

Adding to 231015101 its reverse (101510132), we get a palindrome (332525233).

The spelling of 231015101 in words is "two hundred thirty-one million, fifteen thousand, one hundred one".