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30311112 = 2331397151
BaseRepresentation
bin111001110100…
…0001011001000
32010000222000210
41303220023020
530224423422
63001401120
7515432406
oct163501310
963028023
1030311112
1116123207
12a1991a0
136383790
144050476
1529db10c
hex1ce82c8

30311112 has 32 divisors (see below), whose sum is σ = 81607680. Its totient is φ = 9326400.

The previous prime is 30311093. The next prime is 30311129. The reversal of 30311112 is 21111303.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48264 + ... + 48887.

It is an arithmetic number, because the mean of its divisors is an integer number (2550240).

Almost surely, 230311112 is an apocalyptic number.

It is an amenable number.

30311112 is an abundant number, since it is smaller than the sum of its proper divisors (51296568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30311112 is a wasteful number, since it uses less digits than its factorization.

30311112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97173 (or 97169 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 30311112 is about 5505.5528332766. The cubic root of 30311112 is about 311.7936669960.

Adding to 30311112 its reverse (21111303), we get a palindrome (51422415).

It can be divided in two parts, 30 and 311112, that multiplied together give a triangular number (9333360 = T4320).

The spelling of 30311112 in words is "thirty million, three hundred eleven thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 97151 194302 291453 388604 582906 777208 1165812 1262963 2331624 2525926 3788889 5051852 7577778 10103704 15155556 30311112