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13132131931 = 43833679499
BaseRepresentation
bin11000011101011110…
…00110111001011011
31020220012102102101201
430032233012321123
5203343311210211
610011031055031
7643266164632
oct141657067133
936805372351
1013132131931
1156298230a6
122665b11477
131313885989
148c8122519
1551cd520c1
hex30ebc6e5b

13132131931 has 8 divisors (see below), whose sum is σ = 13599432000. Its totient is φ = 12672191112.

The previous prime is 13132131893. The next prime is 13132131977. The reversal of 13132131931 is 13913123131.

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 13132131931 - 227 = 12997914203 is a prime.

It is a super-2 number, since 2×131321319312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13132131931.

It is not an unprimeable number, because it can be changed into a prime (13132131431) 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, 1836181 + ... + 1843318.

It is an arithmetic number, because the mean of its divisors is an integer number (1699929000).

Almost surely, 213132131931 is an apocalyptic number.

13132131931 is a deficient number, since it is larger than the sum of its proper divisors (467300069).

13132131931 is an equidigital number, since it uses as much as digits as its factorization.

13132131931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679625.

The product of its digits is 1458, while the sum is 28.

The spelling of 13132131931 in words is "thirteen billion, one hundred thirty-two million, one hundred thirty-one thousand, nine hundred thirty-one".

Divisors: 1 43 83 3569 3679499 158218457 305398417 13132131931