30040443131 has 4 divisors (see below), whose sum is σ = 30220326192. Its totient is φ = 29860560072.

The previous prime is 30040443073. The next prime is 30040443149. The reversal of 30040443131 is 13134404003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30040443131 - 2¹⁴ = 30040426747 is a prime.

It is a super-2 number, since 2×30040443131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30040443097 and 30040443106.

It is not an unprimeable number, because it can be changed into a prime (30040443431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89941280 + ... + 89941613.

It is an arithmetic number, because the mean of its divisors is an integer number (7555081548).

Almost surely, 2^30040443131 is an apocalyptic number.

30040443131 is a deficient number, since it is larger than the sum of its proper divisors (179883061).

30040443131 is a wasteful number, since it uses less digits than its factorization.

30040443131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179883060.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30040443131 its reverse (13134404003), we get a palindrome (43174847134).

The spelling of 30040443131 in words is "thirty billion, forty million, four hundred forty-three thousand, one hundred thirty-one".