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31069108 = 2271109611
BaseRepresentation
bin111011010000…
…1001110110100
32011110110210201
41312201032310
530423202413
63025530244
7525040330
oct166411664
964413721
1031069108
11165a0754
12a4a3984
13658a7b5
1441aa7c0
152ada9dd
hex1da13b4

31069108 has 12 divisors (see below), whose sum is σ = 62138272. Its totient is φ = 13315320.

The previous prime is 31069097. The next prime is 31069111. The reversal of 31069108 is 80196013.

It is a happy number.

31069108 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1109611 = 31069108 / (3 + 1 + 0 + 6 + 9 + 1 + 0 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554778 + ... + 554833.

Almost surely, 231069108 is an apocalyptic number.

It is an amenable number.

31069108 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31069108 is a wasteful number, since it uses less digits than its factorization.

31069108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109622 (or 1109620 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 31069108 is about 5573.9669894968. The cubic root of 31069108 is about 314.3713269718.

The spelling of 31069108 in words is "thirty-one million, sixty-nine thousand, one hundred eight".

Divisors: 1 2 4 7 14 28 1109611 2219222 4438444 7767277 15534554 31069108