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70913111 = 1997109353
BaseRepresentation
bin1000011101000…
…00110001010111
311221102202111112
410032200301113
5121123204421
611011525235
71520515523
oct416406127
9157382445
1070913111
1137035085
121b8b981b
13118cb329
1495bcd83
15635b45b
hex43a0c57

70913111 has 16 divisors (see below), whose sum is σ = 76322400. Its totient is φ = 65691648.

The previous prime is 70913107. The next prime is 70913159. The reversal of 70913111 is 11131907.

It is a cyclic number.

It is not a de Polignac number, because 70913111 - 22 = 70913107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70913191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200711 + ... + 201063.

It is an arithmetic number, because the mean of its divisors is an integer number (4770150).

Almost surely, 270913111 is an apocalyptic number.

70913111 is a deficient number, since it is larger than the sum of its proper divisors (5409289).

70913111 is a wasteful number, since it uses less digits than its factorization.

70913111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 189, while the sum is 23.

The square root of 70913111 is about 8420.9922811982. The cubic root of 70913111 is about 413.9127897860.

The spelling of 70913111 in words is "seventy million, nine hundred thirteen thousand, one hundred eleven".

Divisors: 1 19 97 109 353 1843 2071 6707 10573 34241 38477 200887 650579 731063 3732269 70913111