100231057 has 4 divisors (see below), whose sum is σ = 100407780. Its totient is φ = 100054336.

The previous prime is 100231009. The next prime is 100231063. The reversal of 100231057 is 750132001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8856576 + 91374481 = 2976^2 + 9559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100231057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100231007) 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, 87508 + ... + 88645.

It is an arithmetic number, because the mean of its divisors is an integer number (25101945).

Almost surely, 2^100231057 is an apocalyptic number.

It is an amenable number.

100231057 is a deficient number, since it is larger than the sum of its proper divisors (176723).

100231057 is an equidigital number, since it uses as much as digits as its factorization.

100231057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176722.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 100231057 is about 10011.5461842814. The cubic root of 100231057 is about 464.5160989089.

Adding to 100231057 its reverse (750132001), we get a palindrome (850363058).

The spelling of 100231057 in words is "one hundred million, two hundred thirty-one thousand, fifty-seven".