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2131754530 = 25859248167
BaseRepresentation
bin111111100001111…
…1111111000100010
312111120021100110111
41333003333320202
513331212121110
6551310521534
7103553420533
oct17703777042
95446240414
102131754530
119a4357804
124b5b062aa
1327c858619
1416319468a
15c723ae8a
hex7f0ffe22

2131754530 has 16 divisors (see below), whose sum is σ = 3841640640. Its totient is φ = 851705712.

The previous prime is 2131754509. The next prime is 2131754531. The reversal of 2131754530 is 354571312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2131754492 and 2131754501.

It is not an unprimeable number, because it can be changed into a prime (2131754531) 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, 115494 + ... + 132673.

It is an arithmetic number, because the mean of its divisors is an integer number (240102540).

Almost surely, 22131754530 is an apocalyptic number.

2131754530 is a deficient number, since it is larger than the sum of its proper divisors (1709886110).

2131754530 is a wasteful number, since it uses less digits than its factorization.

2131754530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249033.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 2131754530 is about 46170.9273244539. The cubic root of 2131754530 is about 1287.0015348816.

The spelling of 2131754530 in words is "two billion, one hundred thirty-one million, seven hundred fifty-four thousand, five hundred thirty".

Divisors: 1 2 5 10 859 1718 4295 8590 248167 496334 1240835 2481670 213175453 426350906 1065877265 2131754530