1204545331 has 16 divisors (see below), whose sum is σ = 1369156608. Its totient is φ = 1049781600.

The previous prime is 1204545289. The next prime is 1204545347. The reversal of 1204545331 is 1335454021.

It is a cyclic number.

It is not a de Polignac number, because 1204545331 - 2⁷ = 1204545203 is a prime.

It is a super-2 number, since 2×1204545331² = 2901858908867799122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1204545331.

It is not an unprimeable number, because it can be changed into a prime (1204545361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19981 + ... + 52993.

It is an arithmetic number, because the mean of its divisors is an integer number (85572288).

Almost surely, 2^1204545331 is an apocalyptic number.

1204545331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1204545331 is a deficient number, since it is larger than the sum of its proper divisors (164611277).

1204545331 is a wasteful number, since it uses less digits than its factorization.

1204545331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33162.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1204545331 is about 34706.5603452719. The cubic root of 1204545331 is about 1063.9985828627.

Adding to 1204545331 its reverse (1335454021), we get a palindrome (2539999352).

It can be divided in two parts, 1204 and 545331, that added together give a triangular number (546535 = T₁₀₄₅).

The spelling of 1204545331 in words is "one billion, two hundred four million, five hundred forty-five thousand, three hundred thirty-one".