120011031 has 16 divisors (see below), whose sum is σ = 203193600. Its totient is φ = 68577624.

The previous prime is 120011009. The next prime is 120011039. The reversal of 120011031 is 130110021.

It is not a de Polignac number, because 120011031 - 2⁵ = 120010999 is a prime.

It is a super-2 number, since 2×120011031² = 28805295123365922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011039) 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, 317301 + ... + 317678.

It is an arithmetic number, because the mean of its divisors is an integer number (12699600).

Almost surely, 2^120011031 is an apocalyptic number.

120011031 is a deficient number, since it is larger than the sum of its proper divisors (83182569).

120011031 is an equidigital number, since it uses as much as digits as its factorization.

120011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634995 (or 634989 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 120011031 is about 10954.9546324939. The cubic root of 120011031 is about 493.2575281727.

Adding to 120011031 its reverse (130110021), we get a palindrome (250121052).

The spelling of 120011031 in words is "one hundred twenty million, eleven thousand, thirty-one".