120031013 has 4 divisors (see below), whose sum is σ = 120134688. Its totient is φ = 119927340.

The previous prime is 120030991. The next prime is 120031063. The reversal of 120031013 is 310130021.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120031013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120030985 and 120031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120031063) 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, 50081 + ... + 52422.

It is an arithmetic number, because the mean of its divisors is an integer number (30033672).

Almost surely, 2^120031013 is an apocalyptic number.

It is an amenable number.

120031013 is a deficient number, since it is larger than the sum of its proper divisors (103675).

120031013 is a wasteful number, since it uses less digits than its factorization.

120031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103674.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 120031013 is about 10955.8666019626. The cubic root of 120031013 is about 493.2849026700.

Adding to 120031013 its reverse (310130021), we get a palindrome (430161034).

The spelling of 120031013 in words is "one hundred twenty million, thirty-one thousand, thirteen".