101231057 has 2 divisors, whose sum is σ = 101231058. Its totient is φ = 101231056.

The previous prime is 101231051. The next prime is 101231077. The reversal of 101231057 is 750132101.

It is an a-pointer prime, because the next prime (101231077) can be obtained adding 101231057 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73342096 + 27888961 = 8564^2 + 5281^2 .

It is a cyclic number.

It is not a de Polignac number, because 101231057 - 2⁴ = 101231041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101231051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50615528 + 50615529.

It is an arithmetic number, because the mean of its divisors is an integer number (50615529).

Almost surely, 2^101231057 is an apocalyptic number.

It is an amenable number.

101231057 is a deficient number, since it is larger than the sum of its proper divisors (1).

101231057 is an equidigital number, since it uses as much as digits as its factorization.

101231057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 101231057 is about 10061.3645694806. The cubic root of 101231057 is about 466.0558072627.

Adding to 101231057 its reverse (750132101), we get a palindrome (851363158).

The spelling of 101231057 in words is "one hundred one million, two hundred thirty-one thousand, fifty-seven".