30013031123 has 16 divisors (see below), whose sum is σ = 33459909120. Its totient is φ = 26753763456.

The previous prime is 30013031099. The next prime is 30013031143. The reversal of 30013031123 is 32113031003.

It is a cyclic number.

It is not a de Polignac number, because 30013031123 - 2¹⁸ = 30012768979 is a prime.

It is a super-2 number, since 2×30013031123² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30013031143) 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, 1496186 + ... + 1516112.

It is an arithmetic number, because the mean of its divisors is an integer number (2091244320).

Almost surely, 2^30013031123 is an apocalyptic number.

30013031123 is a deficient number, since it is larger than the sum of its proper divisors (3446877997).

30013031123 is a wasteful number, since it uses less digits than its factorization.

30013031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24626.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30013031123 its reverse (32113031003), we get a palindrome (62126062126).

The spelling of 30013031123 in words is "thirty billion, thirteen million, thirty-one thousand, one hundred twenty-three".