30312003013 has 4 divisors (see below), whose sum is σ = 30391147008. Its totient is φ = 30232859020.

The previous prime is 30312003011. The next prime is 30312003049. The reversal of 30312003013 is 31030021303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31030021303 = 23 ⋅1349131361.

It is a cyclic number.

It is not a de Polignac number, because 30312003013 - 2¹ = 30312003011 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 (30312003011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39571423 + ... + 39572188.

It is an arithmetic number, because the mean of its divisors is an integer number (7597786752).

Almost surely, 2^30312003013 is an apocalyptic number.

It is an amenable number.

30312003013 is a deficient number, since it is larger than the sum of its proper divisors (79143995).

30312003013 is an equidigital number, since it uses as much as digits as its factorization.

30312003013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79143994.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 30312003013 its reverse (31030021303), we get a palindrome (61342024316).

The spelling of 30312003013 in words is "thirty billion, three hundred twelve million, three thousand, thirteen".