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131370356 = 221317148609
BaseRepresentation
bin1111101010010…
…00110101110100
3100011012022020202
413311020311310
5232112322411
621011420032
73153425645
oct765106564
9304168222
10131370356
1168178547
1237bb4618
13212a8450
14136396cc
15b7ee83b
hex7d48d74

131370356 has 24 divisors (see below), whose sum is σ = 262148040. Its totient is φ = 57065472.

The previous prime is 131370353. The next prime is 131370367. The reversal of 131370356 is 653073131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9709456 + 121660900 = 3116^2 + 11030^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131370353) 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, 73421 + ... + 75188.

It is an arithmetic number, because the mean of its divisors is an integer number (10922835).

Almost surely, 2131370356 is an apocalyptic number.

It is an amenable number.

131370356 is a deficient number, since it is larger than the sum of its proper divisors (130777684).

131370356 is a wasteful number, since it uses less digits than its factorization.

131370356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148643 (or 148641 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 131370356 is about 11461.6908002266. The cubic root of 131370356 is about 508.3534698703.

The spelling of 131370356 in words is "one hundred thirty-one million, three hundred seventy thousand, three hundred fifty-six".

Divisors: 1 2 4 13 17 26 34 52 68 221 442 884 148609 297218 594436 1931917 2526353 3863834 5052706 7727668 10105412 32842589 65685178 131370356