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131372252442 = 23217942539587
BaseRepresentation
bin111101001011001100…
…1010111110100011010
3110120002120001220002100
41322112121113310122
54123022244034232
6140203535144230
712330345502224
oct1722631276432
9416076056070
10131372252442
1150795236762
1221564375076
13c508289622
146503837414
15363d576c7c
hex1e96657d1a

131372252442 has 48 divisors (see below), whose sum is σ = 286327211040. Its totient is φ = 43531329696.

The previous prime is 131372252437. The next prime is 131372252443. The reversal of 131372252442 is 244252273131.

131372252442 is a `hidden beast` number, since 1 + 31 + 372 + 252 + 4 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 131372252397 and 131372252406.

It is not an unprimeable number, because it can be changed into a prime (131372252443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13698373 + ... + 13707959.

It is an arithmetic number, because the mean of its divisors is an integer number (5965150230).

Almost surely, 2131372252442 is an apocalyptic number.

131372252442 is an abundant number, since it is smaller than the sum of its proper divisors (154954958598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131372252442 is a wasteful number, since it uses less digits than its factorization.

131372252442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14027 (or 14024 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The spelling of 131372252442 in words is "one hundred thirty-one billion, three hundred seventy-two million, two hundred fifty-two thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 18 179 358 537 1074 1611 3222 4253 8506 9587 12759 19174 25518 28761 38277 57522 76554 86283 172566 761287 1522574 1716073 2283861 3432146 4567722 5148219 6851583 10296438 13703166 15444657 30889314 40773511 81547022 122320533 244641066 366961599 733923198 7298458469 14596916938 21895375407 43790750814 65686126221 131372252442