220031394 has 16 divisors (see below), whose sum is σ = 480068640. Its totient is φ = 66676160.

The previous prime is 220031389. The next prime is 220031401. The reversal of 220031394 is 493130022.

220031394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666839 + ... + 1666970.

It is an arithmetic number, because the mean of its divisors is an integer number (30004290).

Almost surely, 2^220031394 is an apocalyptic number.

220031394 is an abundant number, since it is smaller than the sum of its proper divisors (260037246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220031394 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 220031394 = (103224930)₁₁.

220031394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333825.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 220031394 is about 14833.4552279636. The cubic root of 220031394 is about 603.7097874104.

The spelling of 220031394 in words is "two hundred twenty million, thirty-one thousand, three hundred ninety-four".