1223424631 has 24 divisors (see below), whose sum is σ = 1452522240. Its totient is φ = 1021456800.

The previous prime is 1223424619. The next prime is 1223424661. The reversal of 1223424631 is 1364243221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1223424631 is a prime.

It is a super-2 number, since 2×1223424631² = 2993535655474972322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1223424631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223424661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390690 + ... + 393808.

It is an arithmetic number, because the mean of its divisors is an integer number (60521760).

Almost surely, 2^1223424631 is an apocalyptic number.

1223424631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223424631 is a deficient number, since it is larger than the sum of its proper divisors (229097609).

1223424631 is a wasteful number, since it uses less digits than its factorization.

1223424631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367 (or 3354 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 1223424631 is about 34977.4874883832. The cubic root of 1223424631 is about 1069.5286103055.

Adding to 1223424631 its reverse (1364243221), we get a palindrome (2587667852).

The spelling of 1223424631 in words is "one billion, two hundred twenty-three million, four hundred twenty-four thousand, six hundred thirty-one".