120931215 has 16 divisors (see below), whose sum is σ = 193632768. Its totient is φ = 64449056.

The previous prime is 120931211. The next prime is 120931241. The reversal of 120931215 is 512139021.

It is a cyclic number.

It is not a de Polignac number, because 120931215 - 2² = 120931211 is a prime.

It is a super-2 number, since 2×120931215² = 29248717522752450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120931211) 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, 29374 + ... + 33236.

It is an arithmetic number, because the mean of its divisors is an integer number (12102048).

Almost surely, 2^120931215 is an apocalyptic number.

120931215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120931215 is a deficient number, since it is larger than the sum of its proper divisors (72701553).

120931215 is a wasteful number, since it uses less digits than its factorization.

120931215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 120931215 is about 10996.8729646204. The cubic root of 120931215 is about 494.5150029714.

The spelling of 120931215 in words is "one hundred twenty million, nine hundred thirty-one thousand, two hundred fifteen".