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102936931 = 941109391
BaseRepresentation
bin1100010001010…
…11000101100011
321011200201220221
412020223011203
5202322440211
614114143511
72356643446
oct610530543
9234621827
10102936931
1153118049
122a581b97
1318431536
14d95765d
159084c71
hex622b163

102936931 has 4 divisors (see below), whose sum is σ = 103047264. Its totient is φ = 102826600.

The previous prime is 102936919. The next prime is 102936947. The reversal of 102936931 is 139639201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102936931 - 27 = 102936803 is a prime.

It is a super-2 number, since 2×1029369312 = 21192023527397522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102936901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53755 + ... + 55636.

It is an arithmetic number, because the mean of its divisors is an integer number (25761816).

Almost surely, 2102936931 is an apocalyptic number.

102936931 is a deficient number, since it is larger than the sum of its proper divisors (110333).

102936931 is an equidigital number, since it uses as much as digits as its factorization.

102936931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110332.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 102936931 is about 10145.7839026859. The cubic root of 102936931 is about 468.6591191872.

The spelling of 102936931 in words is "one hundred two million, nine hundred thirty-six thousand, nine hundred thirty-one".

Divisors: 1 941 109391 102936931