20113231430 has 8 divisors (see below), whose sum is σ = 36203816592. Its totient is φ = 8045292568.

The previous prime is 20113231409. The next prime is 20113231517. The reversal of 20113231430 is 3413231102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 1005661562 + ... + 1005661581.

It is an arithmetic number, because the mean of its divisors is an integer number (4525477074).

Almost surely, 2^20113231430 is an apocalyptic number.

20113231430 is a deficient number, since it is larger than the sum of its proper divisors (16090585162).

20113231430 is a wasteful number, since it uses less digits than its factorization.

20113231430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011323150.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20113231430 its reverse (3413231102), we get a palindrome (23526462532).

The spelling of 20113231430 in words is "twenty billion, one hundred thirteen million, two hundred thirty-one thousand, four hundred thirty".