20430506031 has 8 divisors (see below), whose sum is σ = 29336111280. Its totient is φ = 12572619072.

The previous prime is 20430506027. The next prime is 20430506051. The reversal of 20430506031 is 13060503402.

It is a happy number.

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

It is not a de Polignac number, because 20430506031 - 2² = 20430506027 is a prime.

It is a super-2 number, since 2×20430506031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20430505992 and 20430506010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430506051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261929526 + ... + 261929603.

It is an arithmetic number, because the mean of its divisors is an integer number (3667013910).

Almost surely, 2^20430506031 is an apocalyptic number.

20430506031 is a deficient number, since it is larger than the sum of its proper divisors (8905605249).

20430506031 is a wasteful number, since it uses less digits than its factorization.

20430506031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523859145.

The product of its (nonzero) digits is 2160, while the sum is 24.

The spelling of 20430506031 in words is "twenty billion, four hundred thirty million, five hundred six thousand, thirty-one".