1142310531 has 16 divisors (see below), whose sum is σ = 1529418240. Its totient is φ = 758380320.

The previous prime is 1142310527. The next prime is 1142310541. The reversal of 1142310531 is 1350132411.

It is not a de Polignac number, because 1142310531 - 2² = 1142310527 is a prime.

It is a super-2 number, since 2×1142310531² = 2609746698467003922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142310498 and 1142310507.

It is not an unprimeable number, because it can be changed into a prime (1142310541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1408116 + ... + 1408926.

It is an arithmetic number, because the mean of its divisors is an integer number (95588640).

Almost surely, 2^1142310531 is an apocalyptic number.

1142310531 is a deficient number, since it is larger than the sum of its proper divisors (387107709).

1142310531 is an equidigital number, since it uses as much as digits as its factorization.

1142310531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1142310531 is about 33798.0847238420. The cubic root of 1142310531 is about 1045.3492055772.

Adding to 1142310531 its reverse (1350132411), we get a palindrome (2492442942).

The spelling of 1142310531 in words is "one billion, one hundred forty-two million, three hundred ten thousand, five hundred thirty-one".