1234532531 has 4 divisors (see below), whose sum is σ = 1243414200. Its totient is φ = 1225650864.

The previous prime is 1234532489. The next prime is 1234532539. The reversal of 1234532531 is 1352354321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1352354321 = 173 ⋅7817077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234532531 is a prime.

It is a super-2 number, since 2×1234532531² = 3048141140194531922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1234532494 and 1234532503.

It is not an unprimeable number, because it can be changed into a prime (1234532539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4440626 + ... + 4440903.

It is an arithmetic number, because the mean of its divisors is an integer number (310853550).

Almost surely, 2^1234532531 is an apocalyptic number.

1234532531 is a deficient number, since it is larger than the sum of its proper divisors (8881669).

1234532531 is an equidigital number, since it uses as much as digits as its factorization.

1234532531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8881668.

The product of its digits is 10800, while the sum is 29.

The square root of 1234532531 is about 35135.9151154485. The cubic root of 1234532531 is about 1072.7557379215.

Adding to 1234532531 its reverse (1352354321), we get a palindrome (2586886852).

The spelling of 1234532531 in words is "one billion, two hundred thirty-four million, five hundred thirty-two thousand, five hundred thirty-one".