231061057 has 2 divisors, whose sum is σ = 231061058. Its totient is φ = 231061056.

The previous prime is 231061027. The next prime is 231061097. The reversal of 231061057 is 750160132.

231061057 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., 141871921 + 89189136 = 11911^2 + 9444^2 .

It is a cyclic number.

It is not a de Polignac number, because 231061057 - 2¹¹ = 231059009 is a prime.

It is not a weakly prime, because it can be changed into another prime (231061007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115530528 + 115530529.

It is an arithmetic number, because the mean of its divisors is an integer number (115530529).

Almost surely, 2^231061057 is an apocalyptic number.

It is an amenable number.

231061057 is a deficient number, since it is larger than the sum of its proper divisors (1).

231061057 is an equidigital number, since it uses as much as digits as its factorization.

231061057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 231061057 is about 15200.6926486920. The cubic root of 231061057 is about 613.6332988113.

The spelling of 231061057 in words is "two hundred thirty-one million, sixty-one thousand, fifty-seven".