1131225686 has 8 divisors (see below), whose sum is σ = 1786145880. Its totient is φ = 535843728.

The previous prime is 1131225661. The next prime is 1131225701. The reversal of 1131225686 is 6865221311.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14884511 + ... + 14884586.

It is an arithmetic number, because the mean of its divisors is an integer number (223268235).

Almost surely, 2^1131225686 is an apocalyptic number.

1131225686 is a deficient number, since it is larger than the sum of its proper divisors (654920194).

1131225686 is a wasteful number, since it uses less digits than its factorization.

1131225686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29769118.

The product of its digits is 17280, while the sum is 35.

The square root of 1131225686 is about 33633.6986666647. The cubic root of 1131225686 is about 1041.9568943133.

Adding to 1131225686 its reverse (6865221311), we get a palindrome (7996446997).

The spelling of 1131225686 in words is "one billion, one hundred thirty-one million, two hundred twenty-five thousand, six hundred eighty-six".