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31404681230 = 25131714210263
BaseRepresentation
bin11101001111110111…
…010110100000001110
310000001122110002202212
4131033313112200032
51003304044244410
622232131150422
72161144246256
oct351767264016
9100048402685
1031404681230
111235613a90a
126105445412
132c663c2520
14173cc18966
15c3c0e5b05
hex74fdd680e

31404681230 has 32 divisors (see below), whose sum is σ = 64457757504. Its totient is φ = 10913481216.

The previous prime is 31404681181. The next prime is 31404681239. The reversal of 31404681230 is 3218640413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404681239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7102922 + ... + 7107341.

It is an arithmetic number, because the mean of its divisors is an integer number (2014304922).

Almost surely, 231404681230 is an apocalyptic number.

31404681230 is an abundant number, since it is smaller than the sum of its proper divisors (33053076274).

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

31404681230 is a wasteful number, since it uses less digits than its factorization.

31404681230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14210300.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 31404681230 in words is "thirty-one billion, four hundred four million, six hundred eighty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 442 1105 2210 14210263 28420526 71051315 142102630 184733419 241574471 369466838 483148942 923667095 1207872355 1847334190 2415744710 3140468123 6280936246 15702340615 31404681230