30123202131 has 32 divisors (see below), whose sum is σ = 48699705600. Its totient is φ = 18250583040.

The previous prime is 30123202121. The next prime is 30123202133. The reversal of 30123202131 is 13120232103.

30123202131 is a `hidden beast` number, since 301 + 232 + 0 + 2 + 131 = 666.

It is not a de Polignac number, because 30123202131 - 2³⁴ = 12943332947 is a prime.

It is a super-2 number, since 2×30123202131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30123202133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1012060 + ... + 1041398.

It is an arithmetic number, because the mean of its divisors is an integer number (1521865800).

Almost surely, 2^30123202131 is an apocalyptic number.

30123202131 is a deficient number, since it is larger than the sum of its proper divisors (18576503469).

30123202131 is a wasteful number, since it uses less digits than its factorization.

30123202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32816 (or 32810 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30123202131 its reverse (13120232103), we get a palindrome (43243434234).

The spelling of 30123202131 in words is "thirty billion, one hundred twenty-three million, two hundred two thousand, one hundred thirty-one".