1144087531 has 4 divisors (see below), whose sum is σ = 1144267000. Its totient is φ = 1143908064.

The previous prime is 1144087481. The next prime is 1144087601. The reversal of 1144087531 is 1357804411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1144087531 - 2²⁹ = 607216619 is a prime.

It is a super-2 number, since 2×1144087531² = 2617872557179351922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144087031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79806 + ... + 93043.

It is an arithmetic number, because the mean of its divisors is an integer number (286066750).

Almost surely, 2^1144087531 is an apocalyptic number.

1144087531 is a deficient number, since it is larger than the sum of its proper divisors (179469).

1144087531 is an equidigital number, since it uses as much as digits as its factorization.

1144087531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179468.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1144087531 is about 33824.3629799587. The cubic root of 1144087531 is about 1045.8909797818.

The spelling of 1144087531 in words is "one billion, one hundred forty-four million, eighty-seven thousand, five hundred thirty-one".