1922231 has 4 divisors (see below), whose sum is σ = 1936200. Its totient is φ = 1908264.

The previous prime is 1922213. The next prime is 1922233. The reversal of 1922231 is 1322291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322291 = 41 ⋅32251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1922231 is a prime.

It is a super-2 number, since 2×1922231² = 7389944034722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6776 + ... + 7053.

It is an arithmetic number, because the mean of its divisors is an integer number (484050).

2^1922231 is an apocalyptic number.

1922231 is a deficient number, since it is larger than the sum of its proper divisors (13969).

1922231 is a wasteful number, since it uses less digits than its factorization.

1922231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13968.

The product of its digits is 216, while the sum is 20.

The square root of 1922231 is about 1386.4454551117. The cubic root of 1922231 is about 124.3374221299.

The spelling of 1922231 in words is "one million, nine hundred twenty-two thousand, two hundred thirty-one".