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52103031 = 317367677
BaseRepresentation
bin1100011011000…
…0011101110111
310122001002220220
43012300131313
5101314244111
65100425423
71201603611
oct306603567
9118032826
1052103031
1127457862
1215548273
13aa436c6
146cc3db1
154892e06
hex31b0777

52103031 has 4 divisors (see below), whose sum is σ = 69470712. Its totient is φ = 34735352.

The previous prime is 52102979. The next prime is 52103039. The reversal of 52103031 is 13030125.

It is a happy number.

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 52103031 - 210 = 52102007 is a prime.

It is a super-3 number, since 3×521030313 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 52103031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52103039) 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, 8683836 + ... + 8683841.

It is an arithmetic number, because the mean of its divisors is an integer number (17367678).

Almost surely, 252103031 is an apocalyptic number.

52103031 is a deficient number, since it is larger than the sum of its proper divisors (17367681).

52103031 is a wasteful number, since it uses less digits than its factorization.

52103031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17367680.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 52103031 is about 7218.2429302428. The cubic root of 52103031 is about 373.4974686617.

Adding to 52103031 its reverse (13030125), we get a palindrome (65133156).

The spelling of 52103031 in words is "fifty-two million, one hundred three thousand, thirty-one".

Divisors: 1 3 17367677 52103031