1131213355 has 12 divisors (see below), whose sum is σ = 1432663632. Its totient is φ = 857339280.

The previous prime is 1131213331. The next prime is 1131213361. The reversal of 1131213355 is 5533121311.

It is not a de Polignac number, because 1131213355 - 2¹⁵ = 1131180587 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311551 + ... + 315160.

It is an arithmetic number, because the mean of its divisors is an integer number (119388636).

Almost surely, 2^1131213355 is an apocalyptic number.

1131213355 is a deficient number, since it is larger than the sum of its proper divisors (301450277).

1131213355 is an equidigital number, since it uses as much as digits as its factorization.

1131213355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626754 (or 626735 counting only the distinct ones).

The product of its digits is 1350, while the sum is 25.

The square root of 1131213355 is about 33633.5153529928. The cubic root of 1131213355 is about 1041.9531083264.

Adding to 1131213355 its reverse (5533121311), we get a palindrome (6664334666).

The spelling of 1131213355 in words is "one billion, one hundred thirty-one million, two hundred thirteen thousand, three hundred fifty-five".