120313261 has 4 divisors (see below), whose sum is σ = 121437792. Its totient is φ = 119188732.

The previous prime is 120313217. The next prime is 120313273. The reversal of 120313261 is 162313021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 162313021 = 13 ⋅12485617.

It is a cyclic number.

It is not a de Polignac number, because 120313261 - 2¹³ = 120305069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120313961) 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 3 ways as a sum of consecutive naturals, for example, 562105 + ... + 562318.

It is an arithmetic number, because the mean of its divisors is an integer number (30359448).

Almost surely, 2^120313261 is an apocalyptic number.

It is an amenable number.

120313261 is a deficient number, since it is larger than the sum of its proper divisors (1124531).

120313261 is a wasteful number, since it uses less digits than its factorization.

120313261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124530.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 120313261 is about 10968.7401737848. The cubic root of 120313261 is about 493.6712464043.

Adding to 120313261 its reverse (162313021), we get a palindrome (282626282).

The spelling of 120313261 in words is "one hundred twenty million, three hundred thirteen thousand, two hundred sixty-one".