30123320031 has 48 divisors (see below), whose sum is σ = 51396753408. Its totient is φ = 16636881600.

The previous prime is 30123320021. The next prime is 30123320047. The reversal of 30123320031 is 13002332103.

30123320031 is a `hidden beast` number, since 301 + 2 + 332 + 0 + 0 + 31 = 666.

It is not a de Polignac number, because 30123320031 - 2⁹ = 30123319519 is a prime.

It is a super-2 number, since 2×30123320031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30123319986 and 30123320013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123320011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1594020 + ... + 1612806.

It is an arithmetic number, because the mean of its divisors is an integer number (1070765696).

Almost surely, 2^30123320031 is an apocalyptic number.

30123320031 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30123320031 is a deficient number, since it is larger than the sum of its proper divisors (21273433377).

30123320031 is a wasteful number, since it uses less digits than its factorization.

30123320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19652 (or 19649 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 30123320031 its reverse (13002332103), we get a palindrome (43125652134).

The spelling of 30123320031 in words is "thirty billion, one hundred twenty-three million, three hundred twenty thousand, thirty-one".