1131214223 has 4 divisors (see below), whose sum is σ = 1170221640. Its totient is φ = 1092206808.

The previous prime is 1131214219. The next prime is 1131214277. The reversal of 1131214223 is 3224121311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131214223 - 2² = 1131214219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131214195 and 1131214204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131214823) 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, 19503665 + ... + 19503722.

It is an arithmetic number, because the mean of its divisors is an integer number (292555410).

Almost surely, 2^1131214223 is an apocalyptic number.

1131214223 is a deficient number, since it is larger than the sum of its proper divisors (39007417).

1131214223 is an equidigital number, since it uses as much as digits as its factorization.

1131214223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39007416.

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

The square root of 1131214223 is about 33633.5282567857. The cubic root of 1131214223 is about 1041.9533748293.

Adding to 1131214223 its reverse (3224121311), we get a palindrome (4355335534).

The spelling of 1131214223 in words is "one billion, one hundred thirty-one million, two hundred fourteen thousand, two hundred twenty-three".