1131313404 has 48 divisors (see below), whose sum is σ = 2851879968. Its totient is φ = 346983168.

The previous prime is 1131313387. The next prime is 1131313429. The reversal of 1131313404 is 4043131311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38014 + ... + 60890.

It is an arithmetic number, because the mean of its divisors is an integer number (59414166).

Almost surely, 2^1131313404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131313404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1425939984).

1131313404 is an abundant number, since it is smaller than the sum of its proper divisors (1720566564).

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

1131313404 is a wasteful number, since it uses less digits than its factorization.

1131313404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23214 (or 23212 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1131313404 is about 33635.0026609186. The cubic root of 1131313404 is about 1041.9838255773.

Adding to 1131313404 its reverse (4043131311), we get a palindrome (5174444715).

The spelling of 1131313404 in words is "one billion, one hundred thirty-one million, three hundred thirteen thousand, four hundred four".