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31683044 = 227920761
BaseRepresentation
bin111100011011…
…1000111100100
32012121122222002
41320313013210
531102324134
63051024432
7533205251
oct170670744
965548862
1031683044
111697aa38
12a73b118
136744083
1442ca428
152bac87e
hex1e371e4

31683044 has 6 divisors (see below), whose sum is σ = 55445334. Its totient is φ = 15841520.

The previous prime is 31683017. The next prime is 31683049. The reversal of 31683044 is 44038613.

It can be written as a sum of positive squares in only one way, i.e., 29833444 + 1849600 = 5462^2 + 1360^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31682998 and 31683016.

It is not an unprimeable number, because it can be changed into a prime (31683049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3960377 + ... + 3960384.

It is an arithmetic number, because the mean of its divisors is an integer number (9240889).

Almost surely, 231683044 is an apocalyptic number.

It is an amenable number.

31683044 is a deficient number, since it is larger than the sum of its proper divisors (23762290).

31683044 is a wasteful number, since it uses less digits than its factorization.

31683044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7920765 (or 7920763 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 31683044 is about 5628.7693148680. The cubic root of 31683044 is about 316.4285298584.

The spelling of 31683044 in words is "thirty-one million, six hundred eighty-three thousand, forty-four".

Divisors: 1 2 4 7920761 15841522 31683044