102431745428 has 6 divisors (see below), whose sum is σ = 179255554506. Its totient is φ = 51215872712.

The previous prime is 102431745421. The next prime is 102431745431. The reversal of 102431745428 is 824547134201.

It can be written as a sum of positive squares in only one way, i.e., 101887363204 + 544382224 = 319198^2 + 23332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102431745421) by changing a digit.

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 as a sum of consecutive naturals, namely, 12803968175 + ... + 12803968182.

It is an arithmetic number, because the mean of its divisors is an integer number (29875925751).

Almost surely, 2^102431745428 is an apocalyptic number.

It is an amenable number.

102431745428 is a deficient number, since it is larger than the sum of its proper divisors (76823809078).

102431745428 is a wasteful number, since it uses less digits than its factorization.

102431745428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25607936361 (or 25607936359 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

Adding to 102431745428 its reverse (824547134201), we get a palindrome (926978879629).

The spelling of 102431745428 in words is "one hundred two billion, four hundred thirty-one million, seven hundred forty-five thousand, four hundred twenty-eight".