103405431656 has 16 divisors (see below), whose sum is σ = 193921784100. Its totient is φ = 51692955904.

The previous prime is 103405431643. The next prime is 103405431749. The reversal of 103405431656 is 656134504301.

103405431656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 101920562500 + 1484869156 = 319250^2 + 38534^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174865 + ... + 1259808.

Almost surely, 2^103405431656 is an apocalyptic number.

It is an amenable number.

103405431656 is a deficient number, since it is larger than the sum of its proper divisors (90516352444).

103405431656 is a wasteful number, since it uses less digits than its factorization.

103405431656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439988 (or 2439984 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 103405431656 its reverse (656134504301), we get a palindrome (759539935957).

The spelling of 103405431656 in words is "one hundred three billion, four hundred five million, four hundred thirty-one thousand, six hundred fifty-six".