1223431 has 6 divisors (see below), whose sum is σ = 1344896. Its totient is φ = 1112100.

The previous prime is 1223419. The next prime is 1223437. The reversal of 1223431 is 1343221.

It is a happy number.

It is not a de Polignac number, because 1223431 - 2¹¹ = 1221383 is a prime.

It is a super-2 number, since 2×1223431² = 2993566823522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4935 + ... + 5176.

2^1223431 is an apocalyptic number.

1223431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223431 is a deficient number, since it is larger than the sum of its proper divisors (121465).

1223431 is a wasteful number, since it uses less digits than its factorization.

1223431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133 (or 10122 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 1223431 is about 1106.0881520024. The cubic root of 1223431 is about 106.9530466248.

Adding to 1223431 its reverse (1343221), we get a palindrome (2566652).

It can be divided in two parts, 122 and 3431, that added together give a palindrome (3553).

The spelling of 1223431 in words is "one million, two hundred twenty-three thousand, four hundred thirty-one".