30013121031 has 16 divisors (see below), whose sum is σ = 42596985600. Its totient is φ = 18742667328.

The previous prime is 30013121027. The next prime is 30013121057. The reversal of 30013121031 is 13012131003.

It is not a de Polignac number, because 30013121031 - 2² = 30013121027 is a prime.

It is a super-2 number, since 2×30013121031² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30013121031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013121011) 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, 2953051 + ... + 2963196.

It is an arithmetic number, because the mean of its divisors is an integer number (2662311600).

Almost surely, 2^30013121031 is an apocalyptic number.

30013121031 is a deficient number, since it is larger than the sum of its proper divisors (12583864569).

30013121031 is a wasteful number, since it uses less digits than its factorization.

30013121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916358.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 30013121031 its reverse (13012131003), we get a palindrome (43025252034).

The spelling of 30013121031 in words is "thirty billion, thirteen million, one hundred twenty-one thousand, thirty-one".