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131021210231313 = 32931415711686397
BaseRepresentation
bin11101110010100111000000…
…101100011010001000010001
3122011220111122102020002202120
4131302213000230122020101
5114133122414304400223
61142354151341204453
736411653505354543
oct3562470054321021
9564814572202676
10131021210231313
1138824868506906
1212840956260729
135815329b92a4c
14244d663521693
151023267e37be3
hex7729c0b1a211

131021210231313 has 32 divisors (see below), whose sum is σ = 186593444674560. Its totient is φ = 81595351783680.

The previous prime is 131021210231299. The next prime is 131021210231341. The reversal of 131021210231313 is 313132012120131.

It is not a de Polignac number, because 131021210231313 - 210 = 131021210230289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131021210231383) 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, 5368231 + ... + 17054627.

It is an arithmetic number, because the mean of its divisors is an integer number (5831045146080).

Almost surely, 2131021210231313 is an apocalyptic number.

It is an amenable number.

131021210231313 is a deficient number, since it is larger than the sum of its proper divisors (55572234443247).

131021210231313 is a wasteful number, since it uses less digits than its factorization.

131021210231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11690617.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 131021210231313 its reverse (313132012120131), we get a palindrome (444153222351444).

The spelling of 131021210231313 in words is "one hundred thirty-one trillion, twenty-one billion, two hundred ten million, two hundred thirty-one thousand, three hundred thirteen".

Divisors: 1 3 29 31 87 93 899 2697 4157 12471 120553 128867 361659 386601 3737143 11211429 11686397 35059191 338905513 362278307 1016716539 1086834921 10506070903 31518212709 48580352329 145741056987 1408830217541 1505990922199 4226490652623 4517972766597 43673736743771 131021210231313