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31440001410 = 2325349333349
BaseRepresentation
bin11101010001111110…
…000101100110000010
310000011002220112221200
4131101332011212002
51003342120021120
622235432202030
72162053413456
oct352176054602
9100132815850
1031440001410
1112374074444
126115239316
132c7080ac3c
1417437b0666
15c40270e90
hex751f85982

31440001410 has 24 divisors (see below), whose sum is σ = 81744003900. Its totient is φ = 8384000352.

The previous prime is 31440001403. The next prime is 31440001469. The reversal of 31440001410 is 1410004413.

It can be written as a sum of positive squares in 2 ways, for example, as 30744466281 + 695535129 = 175341^2 + 26373^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 174666585 + ... + 174666764.

Almost surely, 231440001410 is an apocalyptic number.

31440001410 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31440001410 is an abundant number, since it is smaller than the sum of its proper divisors (50304002490).

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

31440001410 is a wasteful number, since it uses less digits than its factorization.

31440001410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349333362 (or 349333359 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31440001410 its reverse (1410004413), we get a palindrome (32850005823).

The spelling of 31440001410 in words is "thirty-one billion, four hundred forty million, one thousand, four hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 349333349 698666698 1048000047 1746666745 2096000094 3144000141 3493333490 5240000235 6288000282 10480000470 15720000705 31440001410