102012311530 has 16 divisors (see below), whose sum is σ = 183700306944. Its totient is φ = 40787558800.

The previous prime is 102012311507. The next prime is 102012311543. The reversal of 102012311530 is 35113210201.

It is a junction number, because it is equal to n+sod(n) for n = 102012311498 and 102012311507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146042 + ... + 2193061.

It is an arithmetic number, because the mean of its divisors is an integer number (11481269184).

Almost surely, 2^102012311530 is an apocalyptic number.

102012311530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102012311530 is a deficient number, since it is larger than the sum of its proper divisors (81687995414).

102012311530 is a wasteful number, since it uses less digits than its factorization.

102012311530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341461.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 102012311530 its reverse (35113210201), we get a palindrome (137125521731).

The spelling of 102012311530 in words is "one hundred two billion, twelve million, three hundred eleven thousand, five hundred thirty".