143020031 has 24 divisors (see below), whose sum is σ = 189446016. Its totient is φ = 104872320.

The previous prime is 143020027. The next prime is 143020043. The reversal of 143020031 is 130020341.

It is not a de Polignac number, because 143020031 - 2² = 143020027 is a prime.

It is a super-2 number, since 2×143020031² = 40909458534481922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143019988 and 143020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143020061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19040 + ... + 25466.

It is an arithmetic number, because the mean of its divisors is an integer number (7893584).

Almost surely, 2^143020031 is an apocalyptic number.

143020031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

143020031 is a deficient number, since it is larger than the sum of its proper divisors (46425985).

143020031 is a wasteful number, since it uses less digits than its factorization.

143020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479 (or 6462 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 143020031 is about 11959.0982519586. The cubic root of 143020031 is about 522.9565689446.

Adding to 143020031 its reverse (130020341), we get a palindrome (273040372).

The spelling of 143020031 in words is "one hundred forty-three million, twenty thousand, thirty-one".