1131213404 has 12 divisors (see below), whose sum is σ = 1979941824. Its totient is φ = 565515744.

The previous prime is 1131213401. The next prime is 1131213409. The reversal of 1131213404 is 4043121311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131213401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10709 + ... + 48755.

It is an arithmetic number, because the mean of its divisors is an integer number (164995152).

Almost surely, 2^1131213404 is an apocalyptic number.

It is an amenable number.

1131213404 is a deficient number, since it is larger than the sum of its proper divisors (848728420).

1131213404 is a wasteful number, since it uses less digits than its factorization.

1131213404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45484 (or 45482 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1131213404 is about 33633.5160814328. The cubic root of 1131213404 is about 1041.9531233709.

Adding to 1131213404 its reverse (4043121311), we get a palindrome (5174334715).

The spelling of 1131213404 in words is "one billion, one hundred thirty-one million, two hundred thirteen thousand, four hundred four".