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97123481 = 7139711003
BaseRepresentation
bin1011100100111…
…11110010011001
320202202101100222
411302133302121
5144330422411
613345405425
72256351560
oct562376231
9222671328
1097123481
114a907344
1228639875
1317177420
14cc82bd7
1587d74db
hex5c9fc99

97123481 has 16 divisors (see below), whose sum is σ = 120779904. Its totient is φ = 76045824.

The previous prime is 97123451. The next prime is 97123493. The reversal of 97123481 is 18432179.

It is a cyclic number.

It is not a de Polignac number, because 97123481 - 26 = 97123417 is a prime.

It is a super-2 number, since 2×971234812 = 18865941123114722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97123451) 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, 3326 + ... + 14328.

It is an arithmetic number, because the mean of its divisors is an integer number (7548744).

Almost surely, 297123481 is an apocalyptic number.

97123481 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

97123481 is a deficient number, since it is larger than the sum of its proper divisors (23656423).

97123481 is a wasteful number, since it uses less digits than its factorization.

97123481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11120.

The product of its digits is 12096, while the sum is 35.

The square root of 97123481 is about 9855.1246060108. The cubic root of 97123481 is about 459.6649750221.

The spelling of 97123481 in words is "ninety-seven million, one hundred twenty-three thousand, four hundred eighty-one".

Divisors: 1 7 13 91 97 679 1261 8827 11003 77021 143039 1001273 1067291 7471037 13874783 97123481