120002031 has 12 divisors (see below), whose sum is σ = 183532752. Its totient is φ = 75295296.

The previous prime is 120002021. The next prime is 120002041. The reversal of 120002031 is 130200021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120002021) and next prime (120002041).

It is not a de Polignac number, because 120002031 - 2¹¹ = 119999983 is a prime.

It is a super-2 number, since 2×120002031² = 28800974888249922, 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 (120002021) 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 11 ways as a sum of consecutive naturals, for example, 392011 + ... + 392316.

It is an arithmetic number, because the mean of its divisors is an integer number (15294396).

Almost surely, 2^120002031 is an apocalyptic number.

120002031 is a deficient number, since it is larger than the sum of its proper divisors (63530721).

120002031 is a wasteful number, since it uses less digits than its factorization.

120002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784350 (or 784347 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 120002031 is about 10954.5438517539. The cubic root of 120002031 is about 493.2451975597.

Adding to 120002031 its reverse (130200021), we get a palindrome (250202052).

The spelling of 120002031 in words is "one hundred twenty million, two thousand, thirty-one".