1131224215 has 8 divisors (see below), whose sum is σ = 1480875408. Its totient is φ = 822708480.

The previous prime is 1131224173. The next prime is 1131224233. The reversal of 1131224215 is 5124221311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131224215 - 2¹¹ = 1131222167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10283802 + ... + 10283911.

It is an arithmetic number, because the mean of its divisors is an integer number (185109426).

Almost surely, 2^1131224215 is an apocalyptic number.

1131224215 is a deficient number, since it is larger than the sum of its proper divisors (349651193).

1131224215 is a wasteful number, since it uses less digits than its factorization.

1131224215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20567729.

The product of its digits is 480, while the sum is 22.

The square root of 1131224215 is about 33633.6767987088. The cubic root of 1131224215 is about 1041.9564426736.

Adding to 1131224215 its reverse (5124221311), we get a palindrome (6255445526).

The spelling of 1131224215 in words is "one billion, one hundred thirty-one million, two hundred twenty-four thousand, two hundred fifteen".