30311404231 has 4 divisors (see below), whose sum is σ = 30314810152. Its totient is φ = 30307998312.

The previous prime is 30311404183. The next prime is 30311404237. The reversal of 30311404231 is 13240411303.

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 30311404231 - 2¹⁹ = 30310879943 is a prime.

It is a super-2 number, since 2×30311404231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311404237) 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 3 ways as a sum of consecutive naturals, for example, 1689576 + ... + 1707421.

It is an arithmetic number, because the mean of its divisors is an integer number (7578702538).

Almost surely, 2^30311404231 is an apocalyptic number.

30311404231 is a deficient number, since it is larger than the sum of its proper divisors (3405921).

30311404231 is an equidigital number, since it uses as much as digits as its factorization.

30311404231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405920.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 30311404231 its reverse (13240411303), we get a palindrome (43551815534).

The spelling of 30311404231 in words is "thirty billion, three hundred eleven million, four hundred four thousand, two hundred thirty-one".