20224155031 has 4 divisors (see below), whose sum is σ = 20224607200. Its totient is φ = 20223702864.

The previous prime is 20224155023. The next prime is 20224155079. The reversal of 20224155031 is 13055142202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13055142202 = 2 ⋅6527571101.

It is a cyclic number.

It is not a de Polignac number, because 20224155031 - 2³ = 20224155023 is a prime.

It is a super-2 number, since 2×20224155031² (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 = 20224154987 and 20224155005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20224155011) 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 3 ways as a sum of consecutive naturals, for example, 150591 + ... + 251248.

It is an arithmetic number, because the mean of its divisors is an integer number (5056151800).

Almost surely, 2^20224155031 is an apocalyptic number.

20224155031 is a deficient number, since it is larger than the sum of its proper divisors (452169).

20224155031 is an equidigital number, since it uses as much as digits as its factorization.

20224155031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452168.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 20224155031 its reverse (13055142202), we get a palindrome (33279297233).

The spelling of 20224155031 in words is "twenty billion, two hundred twenty-four million, one hundred fifty-five thousand, thirty-one".