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31326899080 = 235783172477
BaseRepresentation
bin11101001011001110…
…101000101110001000
32222212020002100201111
4131023032220232020
51003124141232310
622220312100104
72156211151201
oct351316505610
988766070644
1031326899080
1112316243a44
1260a3394634
132c5325a799
14173276c5a8
15c3537e28a
hex74b3a8b88

31326899080 has 16 divisors (see below), whose sum is σ = 70485523020. Its totient is φ = 12530759616.

The previous prime is 31326899057. The next prime is 31326899083. The reversal of 31326899080 is 8099862313.

It can be written as a sum of positive squares in 2 ways, for example, as 29081845156 + 2245053924 = 170534^2 + 47382^2 .

It is not an unprimeable number, because it can be changed into a prime (31326899083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391586199 + ... + 391586278.

Almost surely, 231326899080 is an apocalyptic number.

It is an amenable number.

31326899080 is an abundant number, since it is smaller than the sum of its proper divisors (39158623940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31326899080 is a wasteful number, since it uses less digits than its factorization.

31326899080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783172488 (or 783172484 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 31326899080 in words is "thirty-one billion, three hundred twenty-six million, eight hundred ninety-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 783172477 1566344954 3132689908 3915862385 6265379816 7831724770 15663449540 31326899080