103215012523 has 24 divisors (see below), whose sum is σ = 124582081920. Its totient is φ = 85172290560.

The previous prime is 103215012487. The next prime is 103215012569. The reversal of 103215012523 is 325210512301.

It is a de Polignac number, because none of the positive numbers 2^k-103215012523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103215013523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117133 + ... + 469201.

It is an arithmetic number, because the mean of its divisors is an integer number (5190920080).

Almost surely, 2^103215012523 is an apocalyptic number.

103215012523 is a deficient number, since it is larger than the sum of its proper divisors (21367069397).

103215012523 is a wasteful number, since it uses less digits than its factorization.

103215012523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352307 (or 352300 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 103215012523 its reverse (325210512301), we get a palindrome (428425524824).

The spelling of 103215012523 in words is "one hundred three billion, two hundred fifteen million, twelve thousand, five hundred twenty-three".