30512012033 has 4 divisors (see below), whose sum is σ = 30513460740. Its totient is φ = 30510563328.

The previous prime is 30512012023. The next prime is 30512012057. The reversal of 30512012033 is 33021021503.

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 15359140624 + 15152871409 = 123932^2 + 123097^2 .

It is a cyclic number.

It is not a de Polignac number, because 30512012033 - 2⁴ = 30512012017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30512011996 and 30512012014.

It is not an unprimeable number, because it can be changed into a prime (30512012023) 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, 692288 + ... + 735041.

It is an arithmetic number, because the mean of its divisors is an integer number (7628365185).

Almost surely, 2^30512012033 is an apocalyptic number.

It is an amenable number.

30512012033 is a deficient number, since it is larger than the sum of its proper divisors (1448707).

30512012033 is a wasteful number, since it uses less digits than its factorization.

30512012033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448706.

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 30512012033 its reverse (33021021503), we get a palindrome (63533033536).

The spelling of 30512012033 in words is "thirty billion, five hundred twelve million, twelve thousand, thirty-three".