224020731 has 48 divisors (see below), whose sum is σ = 340922624. Its totient is φ = 130680000.

The previous prime is 224020729. The next prime is 224020739. The reversal of 224020731 is 137020422.

It is not a de Polignac number, because 224020731 - 2¹ = 224020729 is a prime.

It is a super-2 number, since 2×224020731² = 100370575835548722, 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 = 224020698 and 224020707.

It is not an unprimeable number, because it can be changed into a prime (224020739) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1483506 + ... + 1483656.

Almost surely, 2^224020731 is an apocalyptic number.

224020731 is a deficient number, since it is larger than the sum of its proper divisors (116901893).

224020731 is a wasteful number, since it uses less digits than its factorization.

224020731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 224020731 is about 14967.3221051730. The cubic root of 224020731 is about 607.3365293704.

The spelling of 224020731 in words is "two hundred twenty-four million, twenty thousand, seven hundred thirty-one".