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31151201341 = 132396246257
BaseRepresentation
bin11101000000110000…
…011001110000111101
32222101222110222201211
4131000300121300331
51002244201420331
622151034204421
72151645561661
oct350060316075
988358428654
1031151201341
111223604a6a7
126054583711
132c25a31c20
1417172b48a1
15c24c258b1
hex740c19c3d

31151201341 has 4 divisors (see below), whose sum is σ = 33547447612. Its totient is φ = 28754955072.

The previous prime is 31151201329. The next prime is 31151201351. The reversal of 31151201341 is 14310215113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14310215113 = 81937174649.

It can be written as a sum of positive squares in 2 ways, for example, as 10715355225 + 20435846116 = 103515^2 + 142954^2 .

It is a cyclic number.

It is not a de Polignac number, because 31151201341 - 211 = 31151199293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31151201351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198123116 + ... + 1198123141.

It is an arithmetic number, because the mean of its divisors is an integer number (8386861903).

Almost surely, 231151201341 is an apocalyptic number.

It is an amenable number.

31151201341 is a deficient number, since it is larger than the sum of its proper divisors (2396246271).

31151201341 is a wasteful number, since it uses less digits than its factorization.

31151201341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396246270.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 31151201341 its reverse (14310215113), we get a palindrome (45461416454).

The spelling of 31151201341 in words is "thirty-one billion, one hundred fifty-one million, two hundred one thousand, three hundred forty-one".

Divisors: 1 13 2396246257 31151201341