1223523531432 has 48 divisors (see below), whose sum is σ = 3394531756980. Its totient is φ = 397893830400.

The previous prime is 1223523531427. The next prime is 1223523531491. The reversal of 1223523531432 is 2341353253221.

1223523531432 is a `hidden beast` number, since 1 + 223 + 52 + 353 + 1 + 4 + 32 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1154494376676 + 69029154756 = 1074474^2 + 262734^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207233419 + ... + 207239322.

Almost surely, 2^{1223523531432} is an apocalyptic number.

1223523531432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223523531432 is an abundant number, since it is smaller than the sum of its proper divisors (2171008225548).

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

1223523531432 is a wasteful number, since it uses less digits than its factorization.

1223523531432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414472794 (or 414472787 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 1223523531432 its reverse (2341353253221), we get a palindrome (3564876784653).

The spelling of 1223523531432 in words is "one trillion, two hundred twenty-three billion, five hundred twenty-three million, five hundred thirty-one thousand, four hundred thirty-two".