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131051742 = 231710112721
BaseRepresentation
bin1111100111110…
…11000011011110
3100010121010012020
413303323003132
5232022123432
621000521010
73150631023
oct763730336
9303533166
10131051742
1167a80128
1237a80166
13211c6413
141359554a
15b78a22c
hex7cfb0de

131051742 has 32 divisors (see below), whose sum is σ = 280291104. Its totient is φ = 40704000.

The previous prime is 131051731. The next prime is 131051773. The reversal of 131051742 is 247150131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3942 + ... + 16662.

It is an arithmetic number, because the mean of its divisors is an integer number (8759097).

Almost surely, 2131051742 is an apocalyptic number.

131051742 is an abundant number, since it is smaller than the sum of its proper divisors (149239362).

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

131051742 is a wasteful number, since it uses less digits than its factorization.

131051742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12844.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 131051742 is about 11447.7832788711. The cubic root of 131051742 is about 507.9421653836.

The spelling of 131051742 in words is "one hundred thirty-one million, fifty-one thousand, seven hundred forty-two".

Divisors: 1 2 3 6 17 34 51 101 102 202 303 606 1717 3434 5151 10302 12721 25442 38163 76326 216257 432514 648771 1284821 1297542 2569642 3854463 7708926 21841957 43683914 65525871 131051742