30311302431 has 4 divisors (see below), whose sum is σ = 40415069912. Its totient is φ = 20207534952.

The previous prime is 30311302409. The next prime is 30311302453. The reversal of 30311302431 is 13420311303.

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

It is an interprime number because it is at equal distance from previous prime (30311302409) and next prime (30311302453).

It is not a de Polignac number, because 30311302431 - 2⁷ = 30311302303 is a prime.

It is a super-2 number, since 2×30311302431² (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 = 30311302398 and 30311302407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311302531) 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, 5051883736 + ... + 5051883741.

It is an arithmetic number, because the mean of its divisors is an integer number (10103767478).

Almost surely, 2^30311302431 is an apocalyptic number.

30311302431 is a deficient number, since it is larger than the sum of its proper divisors (10103767481).

30311302431 is a wasteful number, since it uses less digits than its factorization.

30311302431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103767480.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30311302431 its reverse (13420311303), we get a palindrome (43731613734).

The spelling of 30311302431 in words is "thirty billion, three hundred eleven million, three hundred two thousand, four hundred thirty-one".