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31201201002 = 2397428312517
BaseRepresentation
bin11101000011101111…
…001000101101101010
32222112110120020101010
4131003233020231222
51002400001413002
622200022004350
72153123555406
oct350357105552
988473506333
1031201201002
11122612a0134
1260692766b6
132c331ba11a
14171dbac106
15c2930046c
hex743bc8b6a

31201201002 has 32 divisors (see below), whose sum is σ = 63065483712. Its totient is φ = 10289954304.

The previous prime is 31201200983. The next prime is 31201201019. The reversal of 31201201002 is 20010210213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2486448 + ... + 2498964.

It is an arithmetic number, because the mean of its divisors is an integer number (1970796366).

Almost surely, 231201201002 is an apocalyptic number.

31201201002 is an abundant number, since it is smaller than the sum of its proper divisors (31864282710).

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

31201201002 is a wasteful number, since it uses less digits than its factorization.

31201201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16902.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 31201201002 its reverse (20010210213), we get a palindrome (51211411215).

The spelling of 31201201002 in words is "thirty-one billion, two hundred one million, two hundred one thousand, two".

Divisors: 1 2 3 6 97 194 291 582 4283 8566 12517 12849 25034 25698 37551 75102 415451 830902 1214149 1246353 2428298 2492706 3642447 7284894 53610311 107220622 160830933 321661866 5200200167 10400400334 15600600501 31201201002