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131213320333 = 2318749304279
BaseRepresentation
bin111101000110011101…
…1000110000010001101
3110112200111000022012221
41322030323012002031
54122211102222313
6140140100455341
712323405551264
oct1721473060215
9415614008187
10131213320333
1150713553707
122151b0aa551
13c4b1380c64
1464ca6a55db
15362e630c8d
hex1e8cec608d

131213320333 has 8 divisors (see below), whose sum is σ = 136926000000. Its totient is φ = 125501286768.

The previous prime is 131213320309. The next prime is 131213320411. The reversal of 131213320333 is 333023312131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131213320333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131213320298 and 131213320307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131213330333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279088 + ... + 583366.

It is an arithmetic number, because the mean of its divisors is an integer number (17115750000).

Almost surely, 2131213320333 is an apocalyptic number.

It is an amenable number.

131213320333 is a deficient number, since it is larger than the sum of its proper divisors (5712679667).

131213320333 is a wasteful number, since it uses less digits than its factorization.

131213320333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323051.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 131213320333 its reverse (333023312131), we get a palindrome (464236632464).

The spelling of 131213320333 in words is "one hundred thirty-one billion, two hundred thirteen million, three hundred twenty thousand, three hundred thirty-three".

Divisors: 1 23 18749 304279 431227 6998417 5704926971 131213320333