1131251255 has 8 divisors (see below), whose sum is σ = 1362549600. Its totient is φ = 901635616.

The previous prime is 1131251243. The next prime is 1131251257. The reversal of 1131251255 is 5521521311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131251255 - 2¹⁰ = 1131250231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131251257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419195 + ... + 421884.

It is an arithmetic number, because the mean of its divisors is an integer number (170318700).

Almost surely, 2^1131251255 is an apocalyptic number.

1131251255 is a deficient number, since it is larger than the sum of its proper divisors (231298345).

1131251255 is an equidigital number, since it uses as much as digits as its factorization.

1131251255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841353.

The product of its digits is 1500, while the sum is 26.

The square root of 1131251255 is about 33634.0787743622. The cubic root of 1131251255 is about 1041.9647446758.

Adding to 1131251255 its reverse (5521521311), we get a palindrome (6652772566).

The spelling of 1131251255 in words is "one billion, one hundred thirty-one million, two hundred fifty-one thousand, two hundred fifty-five".