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131957007 = 3713895431
BaseRepresentation
bin1111101110110…
…00000100001111
3100012022002222120
413313120010033
5232240111012
621032144023
73161421210
oct767300417
9305262876
10131957007
1168539286
1238238013
1321452490
141374d407
15b8b858c
hex7dd810f

131957007 has 32 divisors (see below), whose sum is σ = 219018240. Its totient is φ = 68808960.

The previous prime is 131956997. The next prime is 131957011. The reversal of 131957007 is 700759131.

It is not a de Polignac number, because 131957007 - 26 = 131956943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131957107) 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, 21582 + ... + 27012.

It is an arithmetic number, because the mean of its divisors is an integer number (6844320).

Almost surely, 2131957007 is an apocalyptic number.

131957007 is a deficient number, since it is larger than the sum of its proper divisors (87061233).

131957007 is a wasteful number, since it uses less digits than its factorization.

131957007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543.

The product of its (nonzero) digits is 6615, while the sum is 33.

The square root of 131957007 is about 11487.2541105349. The cubic root of 131957007 is about 509.1090519170.

It can be divided in two parts, 13195 and 7007, that added together give a palindrome (20202).

The spelling of 131957007 in words is "one hundred thirty-one million, nine hundred fifty-seven thousand, seven".

Divisors: 1 3 7 13 21 39 89 91 267 273 623 1157 1869 3471 5431 8099 16293 24297 38017 70603 114051 211809 483359 494221 1450077 1482663 3383513 6283667 10150539 18851001 43985669 131957007