102131223 has 16 divisors (see below), whose sum is σ = 145232640. Its totient is φ = 63616896.

The previous prime is 102131219. The next prime is 102131231. The reversal of 102131223 is 322131201.

It is not a de Polignac number, because 102131223 - 2² = 102131219 is a prime.

It is a super-2 number, since 2×102131223² = 20861573422951458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115 + ... + 14292.

It is an arithmetic number, because the mean of its divisors is an integer number (9077040).

Almost surely, 2^102131223 is an apocalyptic number.

102131223 is a deficient number, since it is larger than the sum of its proper divisors (43101417).

102131223 is a wasteful number, since it uses less digits than its factorization.

102131223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14566.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 102131223 is about 10105.9993568177. Note that the first 3 decimals coincide. The cubic root of 102131223 is about 467.4331520040.

Adding to 102131223 its reverse (322131201), we get a palindrome (424262424).

The spelling of 102131223 in words is "one hundred two million, one hundred thirty-one thousand, two hundred twenty-three".