30231133013 has 4 divisors (see below), whose sum is σ = 31048190700. Its totient is φ = 29414075328.

The previous prime is 30231133007. The next prime is 30231133019. The reversal of 30231133013 is 31033113203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31033113203 = 16481 ⋅1882963.

It is an interprime number because it is at equal distance from previous prime (30231133007) and next prime (30231133019).

It can be written as a sum of positive squares in 2 ways, for example, as 28302342289 + 1928790724 = 168233^2 + 43918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30231133013 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 (30231133019) 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, 408528788 + ... + 408528861.

It is an arithmetic number, because the mean of its divisors is an integer number (7762047675).

Almost surely, 2^30231133013 is an apocalyptic number.

It is an amenable number.

30231133013 is a deficient number, since it is larger than the sum of its proper divisors (817057687).

30231133013 is an equidigital number, since it uses as much as digits as its factorization.

30231133013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817057686.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 30231133013 its reverse (31033113203), we get a palindrome (61264246216).

The spelling of 30231133013 in words is "thirty billion, two hundred thirty-one million, one hundred thirty-three thousand, thirteen".