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31054303 = 719212289
BaseRepresentation
bin111011001110…
…1100111011111
32011102201111101
41312131213133
530422214203
63025333531
7524646220
oct166354737
964381441
1031054303
1116590615
12a4972a7
136583b37
1441a5247
152ad641d
hex1d9d9df

31054303 has 12 divisors (see below), whose sum is σ = 37459920. Its totient is φ = 25214976.

The previous prime is 31054297. The next prime is 31054333. The reversal of 31054303 is 30345013.

It is a de Polignac number, because none of the positive numbers 2k-31054303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3618 + ... + 8671.

It is an arithmetic number, because the mean of its divisors is an integer number (3121660).

Almost surely, 231054303 is an apocalyptic number.

31054303 is a deficient number, since it is larger than the sum of its proper divisors (6405617).

31054303 is a wasteful number, since it uses less digits than its factorization.

31054303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12334 (or 12315 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 31054303 is about 5572.6387824800. The cubic root of 31054303 is about 314.3213844697.

Adding to 31054303 its reverse (30345013), we get a palindrome (61399316).

The spelling of 31054303 in words is "thirty-one million, fifty-four thousand, three hundred three".

Divisors: 1 7 19 133 361 2527 12289 86023 233491 1634437 4436329 31054303