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31014445 = 571180557
BaseRepresentation
bin111011001001…
…1111000101101
32011100200211011
41312103320231
530414430240
63024425221
7524422060
oct166237055
964320734
1031014445
1116563680
12a478211
13656b957
1441948d7
152ac96ea
hex1d93e2d

31014445 has 16 divisors (see below), whose sum is σ = 46401408. Its totient is φ = 19333440.

The previous prime is 31014439. The next prime is 31014449. The reversal of 31014445 is 54441013.

It is not a de Polignac number, because 31014445 - 213 = 31006253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31014449) 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, 39894 + ... + 40663.

It is an arithmetic number, because the mean of its divisors is an integer number (2900088).

Almost surely, 231014445 is an apocalyptic number.

31014445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31014445 is a deficient number, since it is larger than the sum of its proper divisors (15386963).

31014445 is a wasteful number, since it uses less digits than its factorization.

31014445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80580.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 31014445 is about 5569.0614110459. The cubic root of 31014445 is about 314.1868503975.

Adding to 31014445 its reverse (54441013), we get a palindrome (85455458).

The spelling of 31014445 in words is "thirty-one million, fourteen thousand, four hundred forty-five".

Divisors: 1 5 7 11 35 55 77 385 80557 402785 563899 886127 2819495 4430635 6202889 31014445