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31422010231 = 17311356599
BaseRepresentation
bin11101010000111001…
…011101001101110111
310000002212001111200201
4131100321131031313
51003323013311411
622233550421331
72161444452163
oct352071351567
9100085044621
1031422010231
11123649a63a7
12610b201847
132c69b7bc81
141741249ca3
15c3d8ba3c1
hex750e5d377

31422010231 has 16 divisors (see below), whose sum is σ = 33681528000. Its totient is φ = 29311425024.

The previous prime is 31422010219. The next prime is 31422010267. The reversal of 31422010231 is 13201022413.

It is a happy number.

It is not a de Polignac number, because 31422010231 - 219 = 31421485943 is a prime.

It is a super-2 number, since 2×314220102312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31422010199 and 31422010208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422010031) 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, 526870 + ... + 583468.

It is an arithmetic number, because the mean of its divisors is an integer number (2105095500).

Almost surely, 231422010231 is an apocalyptic number.

31422010231 is a deficient number, since it is larger than the sum of its proper divisors (2259517769).

31422010231 is an equidigital number, since it uses as much as digits as its factorization.

31422010231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56763 (or 56729 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31422010231 its reverse (13201022413), we get a palindrome (44623032644).

The spelling of 31422010231 in words is "thirty-one billion, four hundred twenty-two million, ten thousand, two hundred thirty-one".

Divisors: 1 17 113 289 1921 4913 32657 56599 555169 962183 6395687 16357111 108726679 278070887 1848353543 31422010231