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31232131041 = 317967785909
BaseRepresentation
bin11101000101100101…
…000111111111100001
32222121121202122102010
4131011211013333201
51002430411143131
622203044543133
72153650506426
oct350545077741
988547678363
1031232131041
11122777a6351
1260776b1aa9
132c39729517
141723d3dd4d
15c2bdaeb46
hex745947fe1

31232131041 has 16 divisors (see below), whose sum is σ = 41937825600. Its totient is φ = 20674275648.

The previous prime is 31232131039. The next prime is 31232131067. The reversal of 31232131041 is 14013123213.

It is not a de Polignac number, because 31232131041 - 21 = 31232131039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31232130999 and 31232131017.

It is not an unprimeable number, because it can be changed into a prime (31232131001) 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, 320595 + ... + 406503.

It is an arithmetic number, because the mean of its divisors is an integer number (2621114100).

Almost surely, 231232131041 is an apocalyptic number.

It is an amenable number.

31232131041 is a deficient number, since it is larger than the sum of its proper divisors (10705694559).

31232131041 is a wasteful number, since it uses less digits than its factorization.

31232131041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86768.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31232131041 its reverse (14013123213), we get a palindrome (45245254254).

The spelling of 31232131041 in words is "thirty-one billion, two hundred thirty-two million, one hundred thirty-one thousand, forty-one".

Divisors: 1 3 179 537 677 2031 85909 121183 257727 363549 15377711 46133133 58160393 174481179 10410710347 31232131041