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131213333233 = 197394602259
BaseRepresentation
bin111101000110011101…
…1001001001011110001
3110112200111000221220201
41322030323021023301
54122211103130413
6140140101035201
712323405634013
oct1721473111361
9415614027821
10131213333233
1150713562374
122151b0b5b01
13c4b1386aa8
1464ca6aa1b3
15362e6349dd
hex1e8cec92f1

131213333233 has 8 divisors (see below), whose sum is σ = 140011344800. Its totient is φ = 122604526368.

The previous prime is 131213333231. The next prime is 131213333267. The reversal of 131213333233 is 332333312131.

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

It is a cyclic number.

It is not a de Polignac number, because 131213333233 - 21 = 131213333231 is a prime.

It is a super-2 number, since 2×1312133332332 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131213333231) 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, 47299743 + ... + 47302516.

It is an arithmetic number, because the mean of its divisors is an integer number (17501418100).

Almost surely, 2131213333233 is an apocalyptic number.

It is an amenable number.

131213333233 is a deficient number, since it is larger than the sum of its proper divisors (8798011567).

131213333233 is an equidigital number, since it uses as much as digits as its factorization.

131213333233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94602351.

The product of its digits is 8748, while the sum is 28.

Adding to 131213333233 its reverse (332333312131), we get a palindrome (463546645364).

The spelling of 131213333233 in words is "one hundred thirty-one billion, two hundred thirteen million, three hundred thirty-three thousand, two hundred thirty-three".

Divisors: 1 19 73 1387 94602259 1797442921 6905964907 131213333233