120031143 has 4 divisors (see below), whose sum is σ = 160041528. Its totient is φ = 80020760.

The previous prime is 120031133. The next prime is 120031147. The reversal of 120031143 is 341130021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341130021 = 3 ⋅113710007.

It is a cyclic number.

It is not a de Polignac number, because 120031143 - 2⁵ = 120031111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120031147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20005188 + ... + 20005193.

It is an arithmetic number, because the mean of its divisors is an integer number (40010382).

Almost surely, 2^120031143 is an apocalyptic number.

120031143 is a deficient number, since it is larger than the sum of its proper divisors (40010385).

120031143 is an equidigital number, since it uses as much as digits as its factorization.

120031143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40010384.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 120031143 is about 10955.8725348555. The cubic root of 120031143 is about 493.2850807546.

Adding to 120031143 its reverse (341130021), we get a palindrome (461161164).

The spelling of 120031143 in words is "one hundred twenty million, thirty-one thousand, one hundred forty-three".