224020031 has 4 divisors (see below), whose sum is σ = 226537200. Its totient is φ = 221502864.

The previous prime is 224020007. The next prime is 224020037. The reversal of 224020031 is 130020422.

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 224020031 - 2⁶ = 224019967 is a prime.

It is a super-2 number, since 2×224020031² = 100369948578481922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224019988 and 224020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224020037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258451 + ... + 1258628.

It is an arithmetic number, because the mean of its divisors is an integer number (56634300).

Almost surely, 2^224020031 is an apocalyptic number.

224020031 is a deficient number, since it is larger than the sum of its proper divisors (2517169).

224020031 is an equidigital number, since it uses as much as digits as its factorization.

224020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517168.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 224020031 is about 14967.2987208781. The cubic root of 224020031 is about 607.3358967861.

Adding to 224020031 its reverse (130020422), we get a palindrome (354040453).

The spelling of 224020031 in words is "two hundred twenty-four million, twenty thousand, thirty-one".