20312112430 has 32 divisors (see below), whose sum is σ = 37832054400. Its totient is φ = 7842707712.

The previous prime is 20312112427. The next prime is 20312112433. The reversal of 20312112430 is 3421121302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20312112427) and next prime (20312112433).

It is a super-2 number, since 2×20312112430² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20312112398 and 20312112407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312112433) 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 15 ways as a sum of consecutive naturals, for example, 1760059 + ... + 1771561.

It is an arithmetic number, because the mean of its divisors is an integer number (1182251700).

Almost surely, 2^20312112430 is an apocalyptic number.

20312112430 is a deficient number, since it is larger than the sum of its proper divisors (17519941970).

20312112430 is a wasteful number, since it uses less digits than its factorization.

20312112430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17628.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20312112430 its reverse (3421121302), we get a palindrome (23733233732).

The spelling of 20312112430 in words is "twenty billion, three hundred twelve million, one hundred twelve thousand, four hundred thirty".