102131234 has 8 divisors (see below), whose sum is σ = 155295660. Its totient is φ = 50366016.

The previous prime is 102131233. The next prime is 102131269. The reversal of 102131234 is 432131201.

It can be written as a sum of positive squares in 2 ways, for example, as 88830625 + 13300609 = 9425^2 + 3647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (102131231) 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, 349619 + ... + 349910.

Almost surely, 2^102131234 is an apocalyptic number.

102131234 is a deficient number, since it is larger than the sum of its proper divisors (53164426).

102131234 is an equidigital number, since it uses as much as digits as its factorization.

102131234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699604.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 102131234 is about 10105.9999010489. Note that the first 4 decimals coincide. The cubic root of 102131234 is about 467.4331687855.

Adding to 102131234 its reverse (432131201), we get a palindrome (534262435).

The spelling of 102131234 in words is "one hundred two million, one hundred thirty-one thousand, two hundred thirty-four".