20002423031 has 4 divisors (see below), whose sum is σ = 20189361672. Its totient is φ = 19815484392.

The previous prime is 20002423003. The next prime is 20002423037. The reversal of 20002423031 is 13032420002.

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 20002423031 - 2²⁶ = 19935314167 is a prime.

It is a super-2 number, since 2×20002423031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002423037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93469160 + ... + 93469373.

It is an arithmetic number, because the mean of its divisors is an integer number (5047340418).

Almost surely, 2^20002423031 is an apocalyptic number.

20002423031 is a deficient number, since it is larger than the sum of its proper divisors (186938641).

20002423031 is a wasteful number, since it uses less digits than its factorization.

20002423031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186938640.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20002423031 its reverse (13032420002), we get a palindrome (33034843033).

The spelling of 20002423031 in words is "twenty billion, two million, four hundred twenty-three thousand, thirty-one".