220149831 has 32 divisors (see below), whose sum is σ = 325877760. Its totient is φ = 131090400.

The previous prime is 220149803. The next prime is 220149851. The reversal of 220149831 is 138941022.

It is not a de Polignac number, because 220149831 - 2⁵ = 220149799 is a prime.

It is a super-2 number, since 2×220149831² = 96931896178657122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220149851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 812226 + ... + 812496.

It is an arithmetic number, because the mean of its divisors is an integer number (10183680).

Almost surely, 2^220149831 is an apocalyptic number.

220149831 is a deficient number, since it is larger than the sum of its proper divisors (105727929).

220149831 is a wasteful number, since it uses less digits than its factorization.

220149831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 220149831 is about 14837.4469165015. The cubic root of 220149831 is about 603.8180882450.

It can be divided in two parts, 220 and 149831, that added together give a palindrome (150051).

The spelling of 220149831 in words is "two hundred twenty million, one hundred forty-nine thousand, eight hundred thirty-one".