Search a number
-
+
120107031 = 31117920333
BaseRepresentation
bin1110010100010…
…11000000010111
322101000001212120
413022023000113
5221221411111
615530151023
72655615162
oct712130027
9271001776
10120107031
1161885210
1234282473
131bb63865
1411d46ad9
15a827406
hex728b017

120107031 has 16 divisors (see below), whose sum is σ = 175685760. Its totient is φ = 72381920.

The previous prime is 120107017. The next prime is 120107077. The reversal of 120107031 is 130701021.

It is a cyclic number.

It is not a de Polignac number, because 120107031 - 26 = 120106967 is a prime.

It is a super-2 number, since 2×1201070312 = 28851397791269922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120107031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120107011) 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, 4260 + ... + 16073.

It is an arithmetic number, because the mean of its divisors is an integer number (10980360).

Almost surely, 2120107031 is an apocalyptic number.

120107031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120107031 is a deficient number, since it is larger than the sum of its proper divisors (55578729).

120107031 is a wasteful number, since it uses less digits than its factorization.

120107031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20526.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 120107031 is about 10959.3353356853. The cubic root of 120107031 is about 493.3890163692.

Adding to 120107031 its reverse (130701021), we get a palindrome (250808052).

The spelling of 120107031 in words is "one hundred twenty million, one hundred seven thousand, thirty-one".

Divisors: 1 3 11 33 179 537 1969 5907 20333 60999 223663 670989 3639607 10918821 40035677 120107031