20312434031 has 4 divisors (see below), whose sum is σ = 20323121064. Its totient is φ = 20301747000.

The previous prime is 20312434027. The next prime is 20312434039. The reversal of 20312434031 is 13043421302.

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 20312434031 - 2² = 20312434027 is a prime.

It is a super-5 number, since 5×20312434031⁵ (a number of 53 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312433988 and 20312434006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312434039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5340665 + ... + 5344466.

It is an arithmetic number, because the mean of its divisors is an integer number (5080780266).

Almost surely, 2^20312434031 is an apocalyptic number.

20312434031 is a deficient number, since it is larger than the sum of its proper divisors (10687033).

20312434031 is a wasteful number, since it uses less digits than its factorization.

20312434031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10687032.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20312434031 its reverse (13043421302), we get a palindrome (33355855333).

The spelling of 20312434031 in words is "twenty billion, three hundred twelve million, four hundred thirty-four thousand, thirty-one".