30123013031 has 16 divisors (see below), whose sum is σ = 32185058400. Its totient is φ = 28191862144.

The previous prime is 30123013013. The next prime is 30123013049. The reversal of 30123013031 is 13031032103.

It is an interprime number because it is at equal distance from previous prime (30123013013) and next prime (30123013049).

It is a de Polignac number, because none of the positive numbers 2^k-30123013031 is a prime.

It is a super-2 number, since 2×30123013031² (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123013631) 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, 862301 + ... + 896553.

It is an arithmetic number, because the mean of its divisors is an integer number (2011566150).

Almost surely, 2^30123013031 is an apocalyptic number.

30123013031 is a deficient number, since it is larger than the sum of its proper divisors (2062045369).

30123013031 is an equidigital number, since it uses as much as digits as its factorization.

30123013031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34483 (or 34449 counting only the distinct ones).

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

Adding to 30123013031 its reverse (13031032103), we get a palindrome (43154045134).

The spelling of 30123013031 in words is "thirty billion, one hundred twenty-three million, thirteen thousand, thirty-one".