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131001110431431 = 3194955214058113
BaseRepresentation
bin11101110010010100010010…
…101001110000011011000111
3122011211120202121220110210220
4131302110102221300123013
5114132310233232301211
61142341025044515423
736410342432031102
oct3562242251603307
9564746677813726
10131001110431431
1138817293712749
1212838a869abb73
135813475914736
14244c6b7c9b739
15102298d556806
hex772512a706c7

131001110431431 has 16 divisors (see below), whose sum is σ = 174789462962400. Its totient is φ = 87273432023040.

The previous prime is 131001110431417. The next prime is 131001110431483. The reversal of 131001110431431 is 134134011100131.

It is not a de Polignac number, because 131001110431431 - 218 = 131001110169287 is a prime.

It is a super-2 number, since 2×1310011104314312 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001110435431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30252231 + ... + 34310343.

It is an arithmetic number, because the mean of its divisors is an integer number (10924341435150).

Almost surely, 2131001110431431 is an apocalyptic number.

131001110431431 is a deficient number, since it is larger than the sum of its proper divisors (43788352530969).

131001110431431 is a wasteful number, since it uses less digits than its factorization.

131001110431431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065586.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 131001110431431 its reverse (134134011100131), we get a palindrome (265135121531562).

The spelling of 131001110431431 in words is "one hundred thirty-one trillion, one billion, one hundred ten million, four hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 3 1949 5521 5847 16563 4058113 10760429 12174339 32281287 7909262237 22404841873 23727786711 67214525619 43667036810477 131001110431431