20220231145 has 8 divisors (see below), whose sum is σ = 24311950920. Its totient is φ = 16144402560.

The previous prime is 20220231133. The next prime is 20220231173. The reversal of 20220231145 is 54113202202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3607083481 + 16613147664 = 60059^2 + 128892^2 .

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

It is not a de Polignac number, because 20220231145 - 2¹⁷ = 20220100073 is a prime.

It is a super-2 number, since 2×20220231145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3969996 + ... + 3975085.

It is an arithmetic number, because the mean of its divisors is an integer number (3038993865).

Almost surely, 2^20220231145 is an apocalyptic number.

It is an amenable number.

20220231145 is a deficient number, since it is larger than the sum of its proper divisors (4091719775).

20220231145 is an equidigital number, since it uses as much as digits as its factorization.

20220231145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7945595.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20220231145 its reverse (54113202202), we get a palindrome (74333433347).

The spelling of 20220231145 in words is "twenty billion, two hundred twenty million, two hundred thirty-one thousand, one hundred forty-five".