1313211204 has 30 divisors (see below), whose sum is σ = 3432994334. Its totient is φ = 437736960.

The previous prime is 1313211187. The next prime is 1313211209. The reversal of 1313211204 is 4021123131.

It can be written as a sum of positive squares in only one way, i.e., 1276632900 + 36578304 = 35730^2 + 6048^2 .

It is a super-2 number, since 2×1313211204² = 3449047332622259232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1313211209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2026237 + ... + 2026884.

Almost surely, 2^1313211204 is an apocalyptic number.

It is an amenable number.

1313211204 is an abundant number, since it is smaller than the sum of its proper divisors (2119783130).

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

1313211204 is a wasteful number, since it uses less digits than its factorization.

1313211204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053137 (or 4053126 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1313211204 is about 36238.2560838681. The cubic root of 1313211204 is about 1095.0775099946.

Adding to 1313211204 its reverse (4021123131), we get a palindrome (5334334335).

It can be divided in two parts, 13132 and 11204, that added together give a square (24336 = 156²).

The spelling of 1313211204 in words is "one billion, three hundred thirteen million, two hundred eleven thousand, two hundred four".