103512005231111 has 32 divisors (see below), whose sum is σ = 114628470727680. Its totient is φ = 93055198173696.

The previous prime is 103512005231057. The next prime is 103512005231113. The reversal of 103512005231111 is 111132500215301.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-103512005231111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103512005231113) 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 in 31 ways as a sum of consecutive naturals, for example, 25061366 + ... + 28898028.

It is an arithmetic number, because the mean of its divisors is an integer number (3582139710240).

Almost surely, 2^{103512005231111} is an apocalyptic number.

103512005231111 is a deficient number, since it is larger than the sum of its proper divisors (11116465496569).

103512005231111 is a wasteful number, since it uses less digits than its factorization.

103512005231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837503.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 103512005231111 its reverse (111132500215301), we get a palindrome (214644505446412).

The spelling of 103512005231111 in words is "one hundred three trillion, five hundred twelve billion, five million, two hundred thirty-one thousand, one hundred eleven".