120013231 has 16 divisors (see below), whose sum is σ = 133346304. Its totient is φ = 107315424.

The previous prime is 120013219. The next prime is 120013247. The reversal of 120013231 is 132310021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120013231 is a prime.

It is a super-2 number, since 2×120013231² = 28806351230118722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120013211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61980 + ... + 63886.

It is an arithmetic number, because the mean of its divisors is an integer number (8334144).

Almost surely, 2^120013231 is an apocalyptic number.

120013231 is a deficient number, since it is larger than the sum of its proper divisors (13333073).

120013231 is a wasteful number, since it uses less digits than its factorization.

120013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070.

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

The square root of 120013231 is about 10955.0550432209. The cubic root of 120013231 is about 493.2605422287.

Adding to 120013231 its reverse (132310021), we get a palindrome (252323252).

The spelling of 120013231 in words is "one hundred twenty million, thirteen thousand, two hundred thirty-one".