320142031 has 8 divisors (see below), whose sum is σ = 351057744. Its totient is φ = 289528320.

The previous prime is 320142007. The next prime is 320142041. The reversal of 320142031 is 130241023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320142031 - 2⁷ = 320141903 is a prime.

It is a super-2 number, since 2×320142031² = 204981840025609922, 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 = 320141996 and 320142014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320142041) 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 7 ways as a sum of consecutive naturals, for example, 73276 + ... + 77521.

It is an arithmetic number, because the mean of its divisors is an integer number (43882218).

Almost surely, 2^320142031 is an apocalyptic number.

320142031 is a deficient number, since it is larger than the sum of its proper divisors (30915713).

320142031 is a wasteful number, since it uses less digits than its factorization.

320142031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151001.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320142031 is about 17892.5132667270. The cubic root of 320142031 is about 684.0915593666.

Adding to 320142031 its reverse (130241023), we get a palindrome (450383054).

The spelling of 320142031 in words is "three hundred twenty million, one hundred forty-two thousand, thirty-one".