1001142531 has 16 divisors (see below), whose sum is σ = 1490866720. Its totient is φ = 663966720.

The previous prime is 1001142521. The next prime is 1001142557. The reversal of 1001142531 is 1352411001.

1001142531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1001142531 - 2⁷ = 1001142403 is a prime.

It is a super-2 number, since 2×1001142531² = 2004572734754171922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001142511) 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, 90850 + ... + 101271.

It is an arithmetic number, because the mean of its divisors is an integer number (93179170).

Almost surely, 2^1001142531 is an apocalyptic number.

1001142531 is a deficient number, since it is larger than the sum of its proper divisors (489724189).

1001142531 is a wasteful number, since it uses less digits than its factorization.

1001142531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192323 (or 192317 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1001142531 is about 31640.8364459601. The cubic root of 1001142531 is about 1000.3806987168.

Adding to 1001142531 its reverse (1352411001), we get a palindrome (2353553532).

The spelling of 1001142531 in words is "one billion, one million, one hundred forty-two thousand, five hundred thirty-one".