30123133131 has 24 divisors (see below), whose sum is σ = 50315566224. Its totient is φ = 15889124160.

The previous prime is 30123133127. The next prime is 30123133133. The reversal of 30123133131 is 13133132103.

It is not a de Polignac number, because 30123133131 - 2² = 30123133127 is a prime.

It is a super-2 number, since 2×30123133131² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 30123133098 and 30123133107.

It is not an unprimeable number, because it can be changed into a prime (30123133133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7879600 + ... + 7883421.

It is an arithmetic number, because the mean of its divisors is an integer number (2096481926).

Almost surely, 2^30123133131 is an apocalyptic number.

30123133131 is a deficient number, since it is larger than the sum of its proper divisors (20192433093).

30123133131 is a wasteful number, since it uses less digits than its factorization.

30123133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15763051 (or 15763044 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 30123133131 its reverse (13133132103), we get a palindrome (43256265234).

The spelling of 30123133131 in words is "thirty billion, one hundred twenty-three million, one hundred thirty-three thousand, one hundred thirty-one".