30031023133 has 4 divisors (see below), whose sum is σ = 30669981120. Its totient is φ = 29392065148.

The previous prime is 30031023091. The next prime is 30031023149. The reversal of 30031023133 is 33132013003.

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.

It is a cyclic number.

It is not a de Polignac number, because 30031023133 - 2²⁵ = 29997468701 is a prime.

It is a super-2 number, since 2×30031023133² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30031023133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031023233) 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, 319478923 + ... + 319479016.

It is an arithmetic number, because the mean of its divisors is an integer number (7667495280).

Almost surely, 2^30031023133 is an apocalyptic number.

It is an amenable number.

30031023133 is a deficient number, since it is larger than the sum of its proper divisors (638957987).

30031023133 is an equidigital number, since it uses as much as digits as its factorization.

30031023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638957986.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 30031023133 its reverse (33132013003), we get a palindrome (63163036136).

The spelling of 30031023133 in words is "thirty billion, thirty-one million, twenty-three thousand, one hundred thirty-three".