1031142081 has 4 divisors (see below), whose sum is σ = 1374856112. Its totient is φ = 687428052.

The previous prime is 1031142053. The next prime is 1031142097. The reversal of 1031142081 is 1802411301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1802411301 = 3 ⋅600803767.

It is not a de Polignac number, because 1031142081 - 2⁹ = 1031141569 is a prime.

It is a super-2 number, since 2×1031142081² = 2126507982418021122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031142041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171857011 + ... + 171857016.

It is an arithmetic number, because the mean of its divisors is an integer number (343714028).

Almost surely, 2^1031142081 is an apocalyptic number.

It is an amenable number.

1031142081 is a deficient number, since it is larger than the sum of its proper divisors (343714031).

1031142081 is an equidigital number, since it uses as much as digits as its factorization.

1031142081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343714030.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1031142081 is about 32111.4011061492. The cubic root of 1031142081 is about 1010.2747613740.

Adding to 1031142081 its reverse (1802411301), we get a palindrome (2833553382).

The spelling of 1031142081 in words is "one billion, thirty-one million, one hundred forty-two thousand, eighty-one".