1145431255 has 8 divisors (see below), whose sum is σ = 1387364112. Its totient is φ = 907780608.

The previous prime is 1145431229. The next prime is 1145431319. The reversal of 1145431255 is 5521345411.

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 1145431255 - 2⁵ = 1145431223 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, 1069962 + ... + 1071031.

It is an arithmetic number, because the mean of its divisors is an integer number (173420514).

Almost surely, 2^1145431255 is an apocalyptic number.

1145431255 is a deficient number, since it is larger than the sum of its proper divisors (241932857).

1145431255 is a wasteful number, since it uses less digits than its factorization.

1145431255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141105.

The product of its digits is 12000, while the sum is 31.

The square root of 1145431255 is about 33844.2204076265. The cubic root of 1145431255 is about 1046.3002838268.

Adding to 1145431255 its reverse (5521345411), we get a palindrome (6666776666).

The spelling of 1145431255 in words is "one billion, one hundred forty-five million, four hundred thirty-one thousand, two hundred fifty-five".