102312101 has 4 divisors (see below), whose sum is σ = 104242572. Its totient is φ = 100381632.

The previous prime is 102312083. The next prime is 102312139. The reversal of 102312101 is 101213201.

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 33339076 + 68973025 = 5774^2 + 8305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102312101 is a prime.

It is a super-2 number, since 2×102312101² = 20935532022068402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102312151) 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 in 3 ways as a sum of consecutive naturals, for example, 965156 + ... + 965261.

It is an arithmetic number, because the mean of its divisors is an integer number (26060643).

Almost surely, 2^102312101 is an apocalyptic number.

It is an amenable number.

102312101 is a deficient number, since it is larger than the sum of its proper divisors (1930471).

102312101 is an equidigital number, since it uses as much as digits as its factorization.

102312101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930470.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 102312101 is about 10114.9444387995. The cubic root of 102312101 is about 467.7089361293.

Adding to 102312101 its reverse (101213201), we get a palindrome (203525302).

The spelling of 102312101 in words is "one hundred two million, three hundred twelve thousand, one hundred one".