20302120031 has 8 divisors (see below), whose sum is σ = 20402403840. Its totient is φ = 20201919192.

The previous prime is 20302119997. The next prime is 20302120049. The reversal of 20302120031 is 13002120302.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20302120031 - 2³⁴ = 3122250847 is a prime.

It is a super-2 number, since 2×20302120031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302119988 and 20302120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302120081) 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, 502136 + ... + 541058.

It is an arithmetic number, because the mean of its divisors is an integer number (2550300480).

Almost surely, 2^20302120031 is an apocalyptic number.

20302120031 is a deficient number, since it is larger than the sum of its proper divisors (100283809).

20302120031 is a wasteful number, since it uses less digits than its factorization.

20302120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41485.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20302120031 its reverse (13002120302), we get a palindrome (33304240333).

The spelling of 20302120031 in words is "twenty billion, three hundred two million, one hundred twenty thousand, thirty-one".