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31132312098 = 23191375713491
BaseRepresentation
bin11100111111101000…
…010110001000100010
32222100122221022120020
4130333220112020202
51002224332441343
622145121254310
72151326200206
oct347750261042
988318838506
1031132312098
1112226418958
12604a194396
132c21b4a264
141714998b06
15c23243b83
hex73fa16222

31132312098 has 64 divisors (see below), whose sum is σ = 66154682880. Its totient is φ = 9739612800.

The previous prime is 31132312091. The next prime is 31132312103. The reversal of 31132312098 is 89021323113.

It is not an unprimeable number, because it can be changed into a prime (31132312091) 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 31 ways as a sum of consecutive naturals, for example, 8916133 + ... + 8919623.

It is an arithmetic number, because the mean of its divisors is an integer number (1033666920).

Almost surely, 231132312098 is an apocalyptic number.

31132312098 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

31132312098 is an abundant number, since it is smaller than the sum of its proper divisors (35022370782).

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

31132312098 is a wasteful number, since it uses less digits than its factorization.

31132312098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 31132312098 in words is "thirty-one billion, one hundred thirty-two million, three hundred twelve thousand, ninety-eight".

Divisors: 1 2 3 6 19 38 57 114 137 274 411 571 822 1142 1713 2603 3426 3491 5206 6982 7809 10473 10849 15618 20946 21698 32547 65094 66329 78227 132658 156454 198987 234681 397974 469362 478267 956534 1434801 1486313 1993361 2869602 2972626 3986722 4458939 5980083 8917878 9087073 11960166 18174146 27261219 37873859 54522438 75747718 113621577 227243154 273090457 546180914 819271371 1638542742 5188718683 10377437366 15566156049 31132312098