102531113 has 4 divisors (see below), whose sum is σ = 102568788. Its totient is φ = 102493440.

The previous prime is 102531109. The next prime is 102531127. The reversal of 102531113 is 311135201.

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 72369049 + 30162064 = 8507^2 + 5492^2 .

It is a cyclic number.

It is not a de Polignac number, because 102531113 - 2² = 102531109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102531091 and 102531100.

It is not an unprimeable number, because it can be changed into a prime (102531103) 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, 14408 + ... + 20313.

It is an arithmetic number, because the mean of its divisors is an integer number (25642197).

Almost surely, 2^102531113 is an apocalyptic number.

It is an amenable number.

102531113 is a deficient number, since it is larger than the sum of its proper divisors (37675).

102531113 is an equidigital number, since it uses as much as digits as its factorization.

102531113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37674.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 102531113 is about 10125.7648106205. The cubic root of 102531113 is about 468.0424283374.

Adding to 102531113 its reverse (311135201), we get a palindrome (413666314).

The spelling of 102531113 in words is "one hundred two million, five hundred thirty-one thousand, one hundred thirteen".