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31054345 = 57887267
BaseRepresentation
bin111011001110…
…1101000001001
32011102201112221
41312131220021
530422214340
63025334041
7524646310
oct166355011
964381487
1031054345
1116590653
12a497321
136583b6a
1441a5277
152ad644a
hex1d9da09

31054345 has 8 divisors (see below), whose sum is σ = 42588864. Its totient is φ = 21294384.

The previous prime is 31054337. The next prime is 31054349. The reversal of 31054345 is 54345013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31054345 - 23 = 31054337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31054349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 443599 + ... + 443668.

It is an arithmetic number, because the mean of its divisors is an integer number (5323608).

Almost surely, 231054345 is an apocalyptic number.

31054345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31054345 is a deficient number, since it is larger than the sum of its proper divisors (11534519).

31054345 is an equidigital number, since it uses as much as digits as its factorization.

31054345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887279.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 31054345 is about 5572.6425508909. The cubic root of 31054345 is about 314.3215261730.

Adding to 31054345 its reverse (54345013), we get a palindrome (85399358).

The spelling of 31054345 in words is "thirty-one million, fifty-four thousand, three hundred forty-five".

Divisors: 1 5 7 35 887267 4436335 6210869 31054345