120031231 has 4 divisors (see below), whose sum is σ = 122958864. Its totient is φ = 117103600.

The previous prime is 120031229. The next prime is 120031243. The reversal of 120031231 is 132130021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132130021 = 383 ⋅344987.

It is a cyclic number.

It is not a de Polignac number, because 120031231 - 2¹ = 120031229 is a prime.

It is a super-2 number, since 2×120031231² = 28814992830750722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120031201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1463755 + ... + 1463836.

It is an arithmetic number, because the mean of its divisors is an integer number (30739716).

Almost surely, 2^120031231 is an apocalyptic number.

120031231 is a deficient number, since it is larger than the sum of its proper divisors (2927633).

120031231 is an equidigital number, since it uses as much as digits as its factorization.

120031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927632.

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

The square root of 120031231 is about 10955.8765509657. The cubic root of 120031231 is about 493.2852013041.

Adding to 120031231 its reverse (132130021), we get a palindrome (252161252).

The spelling of 120031231 in words is "one hundred twenty million, thirty-one thousand, two hundred thirty-one".