30302023133 has 4 divisors (see below), whose sum is σ = 32084495100. Its totient is φ = 28519551168.

The previous prime is 30302023117. The next prime is 30302023153. The reversal of 30302023133 is 33132020303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12302580889 + 17999442244 = 110917^2 + 134162^2 .

It is a cyclic number.

It is not a de Polignac number, because 30302023133 - 2⁴ = 30302023117 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 (30302023153) 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, 891235958 + ... + 891235991.

It is an arithmetic number, because the mean of its divisors is an integer number (8021123775).

Almost surely, 2^30302023133 is an apocalyptic number.

It is an amenable number.

30302023133 is a deficient number, since it is larger than the sum of its proper divisors (1782471967).

30302023133 is a wasteful number, since it uses less digits than its factorization.

30302023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782471966.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 30302023133 its reverse (33132020303), we get a palindrome (63434043436).

The spelling of 30302023133 in words is "thirty billion, three hundred two million, twenty-three thousand, one hundred thirty-three".