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31044395 = 571157557
BaseRepresentation
bin111011001101…
…1001100101011
32011102012220102
41312123030223
530421410040
63025220015
7524605304
oct166331453
964365812
1031044395
1116584128
12a49160b
13657c485
1441a17ab
152ad3515
hex1d9b32b

31044395 has 16 divisors (see below), whose sum is σ = 38086848. Its totient is φ = 24286080.

The previous prime is 31044371. The next prime is 31044401. The reversal of 31044395 is 59344013.

It is not a de Polignac number, because 31044395 - 210 = 31043371 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55457 + ... + 56013.

It is an arithmetic number, because the mean of its divisors is an integer number (2380428).

Almost surely, 231044395 is an apocalyptic number.

31044395 is a deficient number, since it is larger than the sum of its proper divisors (7042453).

31044395 is a wasteful number, since it uses less digits than its factorization.

31044395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 31044395 is about 5571.7497251761. The cubic root of 31044395 is about 314.2879524142.

The spelling of 31044395 in words is "thirty-one million, forty-four thousand, three hundred ninety-five".

Divisors: 1 5 71 157 355 557 785 2785 11147 39547 55735 87449 197735 437245 6208879 31044395