102123131120312 has 8 divisors (see below), whose sum is σ = 191480870850600. Its totient is φ = 51061565560152.

The previous prime is 102123131120299. The next prime is 102123131120321. The reversal of 102123131120312 is 213021131321201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6382695695012 + ... + 6382695695027.

It is an arithmetic number, because the mean of its divisors is an integer number (23935108856325).

Almost surely, 2^{102123131120312} is an apocalyptic number.

It is an amenable number.

102123131120312 is a deficient number, since it is larger than the sum of its proper divisors (89357739730288).

102123131120312 is a wasteful number, since it uses less digits than its factorization.

102123131120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12765391390045 (or 12765391390041 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 102123131120312 its reverse (213021131321201), we get a palindrome (315144262441513).

The spelling of 102123131120312 in words is "one hundred two trillion, one hundred twenty-three billion, one hundred thirty-one million, one hundred twenty thousand, three hundred twelve".