220494031 has 8 divisors (see below), whose sum is σ = 242190720. Its totient is φ = 199806552.

The previous prime is 220494017. The next prime is 220494049. The reversal of 220494031 is 130494022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220494031 is a prime.

It is a super-2 number, since 2×220494031² = 97235235413257922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220493987 and 220494005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220494331) 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, 251845 + ... + 252718.

It is an arithmetic number, because the mean of its divisors is an integer number (30273840).

Almost surely, 2^220494031 is an apocalyptic number.

220494031 is a deficient number, since it is larger than the sum of its proper divisors (21696689).

220494031 is a wasteful number, since it uses less digits than its factorization.

220494031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504605.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 220494031 is about 14849.0414168727. The cubic root of 220494031 is about 604.1326103504.

Subtracting from 220494031 its reverse (130494022), we obtain a palindrome (90000009).

The spelling of 220494031 in words is "two hundred twenty million, four hundred ninety-four thousand, thirty-one".