1219231 has 4 divisors (see below), whose sum is σ = 1313032. Its totient is φ = 1125432.

The previous prime is 1219213. The next prime is 1219237. The reversal of 1219231 is 1329121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1329121 = 199 ⋅6679.

It is a cyclic number.

It is not a de Polignac number, because 1219231 - 2¹³ = 1211039 is a prime.

It is a super-2 number, since 2×1219231² = 2973048462722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1219199 and 1219208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46881 + ... + 46906.

It is an arithmetic number, because the mean of its divisors is an integer number (328258).

2^1219231 is an apocalyptic number.

1219231 is a deficient number, since it is larger than the sum of its proper divisors (93801).

1219231 is an equidigital number, since it uses as much as digits as its factorization.

1219231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93800.

The product of its digits is 108, while the sum is 19.

The square root of 1219231 is about 1104.1879369020. The cubic root of 1219231 is about 106.8305174939.

The spelling of 1219231 in words is "one million, two hundred nineteen thousand, two hundred thirty-one".