1204045311 has 32 divisors (see below), whose sum is σ = 1860019200. Its totient is φ = 678585600.

The previous prime is 1204045277. The next prime is 1204045327. The reversal of 1204045311 is 1135404021.

It is not a de Polignac number, because 1204045311 - 2⁹ = 1204044799 is a prime.

It is a super-2 number, since 2×1204045311² = 2899450221882173442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204045351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1309710 + ... + 1310628.

It is an arithmetic number, because the mean of its divisors is an integer number (58125600).

Almost surely, 2^1204045311 is an apocalyptic number.

1204045311 is a deficient number, since it is larger than the sum of its proper divisors (655973889).

1204045311 is an equidigital number, since it uses as much as digits as its factorization.

1204045311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1204045311 is about 34699.3560603075. The cubic root of 1204045311 is about 1063.8513366527.

Adding to 1204045311 its reverse (1135404021), we get a palindrome (2339449332).

The spelling of 1204045311 in words is "one billion, two hundred four million, forty-five thousand, three hundred eleven".