30511103103 has 12 divisors (see below), whose sum is σ = 47461716120. Its totient is φ = 18776063376.

The previous prime is 30511103083. The next prime is 30511103111. The reversal of 30511103103 is 30130111503.

It is not a de Polignac number, because 30511103103 - 2¹² = 30511099007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30511103143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130389213 + ... + 130389446.

It is an arithmetic number, because the mean of its divisors is an integer number (3955143010).

Almost surely, 2^30511103103 is an apocalyptic number.

30511103103 is a deficient number, since it is larger than the sum of its proper divisors (16950613017).

30511103103 is a wasteful number, since it uses less digits than its factorization.

30511103103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260778678 (or 260778675 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

Adding to 30511103103 its reverse (30130111503), we get a palindrome (60641214606).

The spelling of 30511103103 in words is "thirty billion, five hundred eleven million, one hundred three thousand, one hundred three".