30133121231 has 16 divisors (see below), whose sum is σ = 33646498560. Its totient is φ = 26818646400.

The previous prime is 30133121209. The next prime is 30133121279. The reversal of 30133121231 is 13212133103.

It is a cyclic number.

It is not a de Polignac number, because 30133121231 - 2³⁴ = 12953252047 is a prime.

It is a super-2 number, since 2×30133121231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30133121281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91406 + ... + 261956.

It is an arithmetic number, because the mean of its divisors is an integer number (2102906160).

Almost surely, 2^30133121231 is an apocalyptic number.

30133121231 is a deficient number, since it is larger than the sum of its proper divisors (3513377329).

30133121231 is a wasteful number, since it uses less digits than its factorization.

30133121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171134.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 30133121231 its reverse (13212133103), we get a palindrome (43345254334).

The spelling of 30133121231 in words is "thirty billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred thirty-one".