222431000 has 128 divisors (see below), whose sum is σ = 577661760. Its totient is φ = 79488000.

The previous prime is 222430979. The next prime is 222431029. The reversal of 222431000 is 134222.

It is a super-2 number, since 2×222431000² = 98951099522000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 802862 + ... + 803138.

Almost surely, 2^222431000 is an apocalyptic number.

222431000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222431000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288830880).

222431000 is an abundant number, since it is smaller than the sum of its proper divisors (355230760).

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

222431000 is a wasteful number, since it uses less digits than its factorization.

222431000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 222431000 is about 14914.1208255800. The cubic root of 222431000 is about 605.8964921043.

Adding to 222431000 its reverse (134222), we get a palindrome (222565222).

The spelling of 222431000 in words is "two hundred twenty-two million, four hundred thirty-one thousand".