120312013 has 4 divisors (see below), whose sum is σ = 120415068. Its totient is φ = 120208960.

The previous prime is 120312007. The next prime is 120312019. The reversal of 120312013 is 310213021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (120312007) and next prime (120312019).

It can be written as a sum of positive squares in 2 ways, for example, as 70778569 + 49533444 = 8413^2 + 7038^2 .

It is a cyclic number.

It is not a de Polignac number, because 120312013 - 2¹⁷ = 120180941 is a prime.

It is a super-2 number, since 2×120312013² = 28949960944224338, 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 = 120311984 and 120312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120312019) 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, 49756 + ... + 52117.

It is an arithmetic number, because the mean of its divisors is an integer number (30103767).

Almost surely, 2^120312013 is an apocalyptic number.

It is an amenable number.

120312013 is a deficient number, since it is larger than the sum of its proper divisors (103055).

120312013 is a wasteful number, since it uses less digits than its factorization.

120312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103054.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 120312013 is about 10968.6832846974. The cubic root of 120312013 is about 493.6695394607.

Adding to 120312013 its reverse (310213021), we get a palindrome (430525034).

The spelling of 120312013 in words is "one hundred twenty million, three hundred twelve thousand, thirteen".