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31241205141 = 3233131346663
BaseRepresentation
bin11101000110000111…
…101111010110010101
32222122020211122201220
4131012013233112111
51002440222031031
622204011240553
72154120601506
oct350607572625
988566748656
1031241205141
1112281933903
12607a749159
132c3b585803
141725222bad
15c2caa3596
hex7461ef595

31241205141 has 32 divisors (see below), whose sum is σ = 45012467712. Its totient is φ = 19217278080.

The previous prime is 31241205101. The next prime is 31241205157. The reversal of 31241205141 is 14150214213.

It is not a de Polignac number, because 31241205141 - 29 = 31241204629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31241205101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646176 + ... + 692838.

It is an arithmetic number, because the mean of its divisors is an integer number (1406639616).

Almost surely, 231241205141 is an apocalyptic number.

31241205141 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31241205141 is a deficient number, since it is larger than the sum of its proper divisors (13771262571).

31241205141 is a wasteful number, since it uses less digits than its factorization.

31241205141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47033.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 31241205141 its reverse (14150214213), we get a palindrome (45391419354).

The spelling of 31241205141 in words is "thirty-one billion, two hundred forty-one million, two hundred five thousand, one hundred forty-one".

Divisors: 1 3 23 31 69 93 313 713 939 2139 7199 9703 21597 29109 46663 139989 223169 669507 1073249 1446553 3219747 4339659 14605519 33270719 43816557 99812157 335926937 452771089 1007780811 1358313267 10413735047 31241205141