1131425215 has 8 divisors (see below), whose sum is σ = 1357892928. Its totient is φ = 905018400.

The previous prime is 1131425213. The next prime is 1131425249. The reversal of 1131425215 is 5125241311.

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

It is not a de Polignac number, because 1131425215 - 2¹ = 1131425213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131425215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131425213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55690 + ... + 73240.

It is an arithmetic number, because the mean of its divisors is an integer number (169736616).

Almost surely, 2^1131425215 is an apocalyptic number.

1131425215 is a deficient number, since it is larger than the sum of its proper divisors (226467713).

1131425215 is a wasteful number, since it uses less digits than its factorization.

1131425215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30449.

The product of its digits is 1200, while the sum is 25.

The square root of 1131425215 is about 33636.6647425098. The cubic root of 1131425215 is about 1042.0181518789.

Adding to 1131425215 its reverse (5125241311), we get a palindrome (6256666526).

The spelling of 1131425215 in words is "one billion, one hundred thirty-one million, four hundred twenty-five thousand, two hundred fifteen".