220513431 has 16 divisors (see below), whose sum is σ = 300088800. Its totient is φ = 144004608.

The previous prime is 220513429. The next prime is 220513459. The reversal of 220513431 is 134315022.

It is not a de Polignac number, because 220513431 - 2¹ = 220513429 is a prime.

It is a super-2 number, since 2×220513431² = 97252346502783522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220513398 and 220513407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220513481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25315 + ... + 32891.

It is an arithmetic number, because the mean of its divisors is an integer number (18755550).

Almost surely, 2^220513431 is an apocalyptic number.

220513431 is a deficient number, since it is larger than the sum of its proper divisors (79575369).

220513431 is a wasteful number, since it uses less digits than its factorization.

220513431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 220513431 is about 14849.6946433252. The cubic root of 220513431 is about 604.1503278805.

Adding to 220513431 its reverse (134315022), we get a palindrome (354828453).

The spelling of 220513431 in words is "two hundred twenty million, five hundred thirteen thousand, four hundred thirty-one".