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2131454207 = 79101267133
BaseRepresentation
bin111111100001011…
…0110100011111111
312111112201002111102
41333002312203333
513331123013312
6551300243315
7103551030131
oct17702664377
95445632442
102131454207
119a4172103
124b59a053b
1327c781a0c
14163117051
15c71cbec2
hex7f0b68ff

2131454207 has 8 divisors (see below), whose sum is σ = 2179813440. Its totient is φ = 2083629600.

The previous prime is 2131454189. The next prime is 2131454239. The reversal of 2131454207 is 7024541312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131454207 - 216 = 2131388671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131454207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131454287) 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, 125588 + ... + 141545.

It is an arithmetic number, because the mean of its divisors is an integer number (272476680).

Almost surely, 22131454207 is an apocalyptic number.

2131454207 is a deficient number, since it is larger than the sum of its proper divisors (48359233).

2131454207 is a wasteful number, since it uses less digits than its factorization.

2131454207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267313.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2131454207 is about 46167.6749143814. The cubic root of 2131454207 is about 1286.9410941650.

Adding to 2131454207 its reverse (7024541312), we get a palindrome (9155995519).

The spelling of 2131454207 in words is "two billion, one hundred thirty-one million, four hundred fifty-four thousand, two hundred seven".

Divisors: 1 79 101 7979 267133 21103507 26980433 2131454207