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102970993 = 251410243
BaseRepresentation
bin1100010001100…
…11011001110001
321011202110122111
412020303121301
5202330032433
614115005321
72360144656
oct610633161
9234673574
10102970993
11531406a4
122a599841
1318443ba8
14d965c2d
15908edcd
hex6233671

102970993 has 4 divisors (see below), whose sum is σ = 103381488. Its totient is φ = 102560500.

The previous prime is 102970949. The next prime is 102971017. The reversal of 102970993 is 399079201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102970993 - 213 = 102962801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102970193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204871 + ... + 205372.

It is an arithmetic number, because the mean of its divisors is an integer number (25845372).

Almost surely, 2102970993 is an apocalyptic number.

It is an amenable number.

102970993 is a deficient number, since it is larger than the sum of its proper divisors (410495).

102970993 is an equidigital number, since it uses as much as digits as its factorization.

102970993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410494.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 102970993 is about 10147.4623921451. The cubic root of 102970993 is about 468.7108068446.

The spelling of 102970993 in words is "one hundred two million, nine hundred seventy thousand, nine hundred ninety-three".

Divisors: 1 251 410243 102970993