1204013531 has 16 divisors (see below), whose sum is σ = 1411776000. Its totient is φ = 1005502848.

The previous prime is 1204013519. The next prime is 1204013539. The reversal of 1204013531 is 1353104021.

It is not a de Polignac number, because 1204013531 - 2¹⁰ = 1204012507 is a prime.

It is a super-2 number, since 2×1204013531² = 2899297165662175922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204013539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33770 + ... + 59568.

It is an arithmetic number, because the mean of its divisors is an integer number (88236000).

Almost surely, 2^1204013531 is an apocalyptic number.

1204013531 is a deficient number, since it is larger than the sum of its proper divisors (207762469).

1204013531 is a wasteful number, since it uses less digits than its factorization.

1204013531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25978.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1204013531 is about 34698.8981237157. The cubic root of 1204013531 is about 1063.8419766802.

Adding to 1204013531 its reverse (1353104021), we get a palindrome (2557117552).

The spelling of 1204013531 in words is "one billion, two hundred four million, thirteen thousand, five hundred thirty-one".