220431011 has 8 divisors (see below), whose sum is σ = 230342400. Its totient is φ = 210546952.

The previous prime is 220430981. The next prime is 220431023. The reversal of 220431011 is 110134022.

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

It is a cyclic number.

It is not a de Polignac number, because 220431011 - 2¹⁸ = 220168867 is a prime.

It is a super-2 number, since 2×220431011² = 97179661220964242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220431511) 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, 10640 + ... + 23538.

It is an arithmetic number, because the mean of its divisors is an integer number (28792800).

Almost surely, 2^220431011 is an apocalyptic number.

220431011 is a deficient number, since it is larger than the sum of its proper divisors (9911389).

220431011 is a wasteful number, since it uses less digits than its factorization.

220431011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13665.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 220431011 is about 14846.9192427251. The cubic root of 220431011 is about 604.0750486034.

Adding to 220431011 its reverse (110134022), we get a palindrome (330565033).

The spelling of 220431011 in words is "two hundred twenty million, four hundred thirty-one thousand, eleven".