102012104431 has 4 divisors (see below), whose sum is σ = 102016651000. Its totient is φ = 102007557864.

The previous prime is 102012104399. The next prime is 102012104449. The reversal of 102012104431 is 134401210201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102012104431 - 2⁵ = 102012104399 is a prime.

It is a super-2 number, since 2×102012104431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102012104399 and 102012104408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012144431) 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, 2239461 + ... + 2284558.

It is an arithmetic number, because the mean of its divisors is an integer number (25504162750).

Almost surely, 2^102012104431 is an apocalyptic number.

102012104431 is a deficient number, since it is larger than the sum of its proper divisors (4546569).

102012104431 is an equidigital number, since it uses as much as digits as its factorization.

102012104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546568.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 102012104431 its reverse (134401210201), we get a palindrome (236413314632).

The spelling of 102012104431 in words is "one hundred two billion, twelve million, one hundred four thousand, four hundred thirty-one".