1144542531 has 16 divisors (see below), whose sum is σ = 1666759680. Its totient is φ = 692841120.

The previous prime is 1144542467. The next prime is 1144542547. The reversal of 1144542531 is 1352454411.

It is not a de Polignac number, because 1144542531 - 2⁶ = 1144542467 is a prime.

It is a super-2 number, since 2×1144542531² = 2619955210535771922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1144542631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8385 + ... + 48573.

It is an arithmetic number, because the mean of its divisors is an integer number (104172480).

Almost surely, 2^1144542531 is an apocalyptic number.

1144542531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1144542531 is a deficient number, since it is larger than the sum of its proper divisors (522217149).

1144542531 is a wasteful number, since it uses less digits than its factorization.

1144542531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41066.

The product of its digits is 9600, while the sum is 30.

The square root of 1144542531 is about 33831.0882325709. The cubic root of 1144542531 is about 1046.0296105863.

Adding to 1144542531 its reverse (1352454411), we get a palindrome (2496996942).

The spelling of 1144542531 in words is "one billion, one hundred forty-four million, five hundred forty-two thousand, five hundred thirty-one".