1223532534 has 64 divisors (see below), whose sum is σ = 2965704192. Its totient is φ = 328512000.

The previous prime is 1223532509. The next prime is 1223532559. The reversal of 1223532534 is 4352353221.

It is an interprime number because it is at equal distance from previous prime (1223532509) and next prime (1223532559).

It is a super-2 number, since 2×1223532534² = 2994063723512922312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842509 + ... + 843959.

It is an arithmetic number, because the mean of its divisors is an integer number (46339128).

Almost surely, 2^1223532534 is an apocalyptic number.

1223532534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223532534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482852096).

1223532534 is an abundant number, since it is smaller than the sum of its proper divisors (1742171658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223532534 is a wasteful number, since it uses less digits than its factorization.

1223532534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its digits is 21600, while the sum is 30.

The square root of 1223532534 is about 34979.0299179380. The cubic root of 1223532534 is about 1069.5600526328.

Adding to 1223532534 its reverse (4352353221), we get a palindrome (5575885755).

The spelling of 1223532534 in words is "one billion, two hundred twenty-three million, five hundred thirty-two thousand, five hundred thirty-four".