30421131243 has 4 divisors (see below), whose sum is σ = 40561508328. Its totient is φ = 20280754160.

The previous prime is 30421131239. The next prime is 30421131259. The reversal of 30421131243 is 34213112403.

It is a happy number.

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 30421131243 - 2² = 30421131239 is a prime.

It is a super-2 number, since 2×30421131243² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30421133243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070188538 + ... + 5070188543.

It is an arithmetic number, because the mean of its divisors is an integer number (10140377082).

Almost surely, 2^30421131243 is an apocalyptic number.

30421131243 is a deficient number, since it is larger than the sum of its proper divisors (10140377085).

30421131243 is a wasteful number, since it uses less digits than its factorization.

30421131243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140377084.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 30421131243 its reverse (34213112403), we get a palindrome (64634243646).

The spelling of 30421131243 in words is "thirty billion, four hundred twenty-one million, one hundred thirty-one thousand, two hundred forty-three".