220831942 has 8 divisors (see below), whose sum is σ = 333099000. Its totient is φ = 109798944.

The previous prime is 220831931. The next prime is 220831969. The reversal of 220831942 is 249138022.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308067 + ... + 308782.

It is an arithmetic number, because the mean of its divisors is an integer number (41637375).

Almost surely, 2^220831942 is an apocalyptic number.

220831942 is a deficient number, since it is larger than the sum of its proper divisors (112267058).

220831942 is a wasteful number, since it uses less digits than its factorization.

220831942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617030.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 220831942 is about 14860.4152701060. The cubic root of 220831942 is about 604.4410674667.

Adding to 220831942 its reverse (249138022), we get a palindrome (469969964).

It can be divided in two parts, 22083 and 1942, that added together give a square (24025 = 155²).

The spelling of 220831942 in words is "two hundred twenty million, eight hundred thirty-one thousand, nine hundred forty-two".