1223434531 has 8 divisors (see below), whose sum is σ = 1337556528. Its totient is φ = 1109796000.

The previous prime is 1223434517. The next prime is 1223434627. The reversal of 1223434531 is 1354343221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223434531 - 2²⁷ = 1089216803 is a prime.

It is a super-2 number, since 2×1223434531² = 2993584103286379922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1223434531.

It is not an unprimeable number, because it can be changed into a prime (1223434501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115560 + ... + 125701.

It is an arithmetic number, because the mean of its divisors is an integer number (167194566).

Almost surely, 2^1223434531 is an apocalyptic number.

1223434531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223434531 is a deficient number, since it is larger than the sum of its proper divisors (114121997).

1223434531 is a wasteful number, since it uses less digits than its factorization.

1223434531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241733.

The product of its digits is 8640, while the sum is 28.

The square root of 1223434531 is about 34977.6290076958. The cubic root of 1223434531 is about 1069.5314951868.

Adding to 1223434531 its reverse (1354343221), we get a palindrome (2577777752).

The spelling of 1223434531 in words is "one billion, two hundred twenty-three million, four hundred thirty-four thousand, five hundred thirty-one".