30123123131 has 16 divisors (see below), whose sum is σ = 31480780800. Its totient is φ = 28794680928.

The previous prime is 30123123101. The next prime is 30123123137. The reversal of 30123123131 is 13132132103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30123123131 is a prime.

It is a super-2 number, since 2×30123123131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30123123137) 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 15 ways as a sum of consecutive naturals, for example, 4884656 + ... + 4890818.

It is an arithmetic number, because the mean of its divisors is an integer number (1967548800).

Almost surely, 2^30123123131 is an apocalyptic number.

30123123131 is a deficient number, since it is larger than the sum of its proper divisors (1357657669).

30123123131 is a wasteful number, since it uses less digits than its factorization.

30123123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8498.

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

Adding to 30123123131 its reverse (13132132103), we get a palindrome (43255255234).

The spelling of 30123123131 in words is "thirty billion, one hundred twenty-three million, one hundred twenty-three thousand, one hundred thirty-one".