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53100031 = 239723801
BaseRepresentation
bin1100101010001…
…1110111111111
310200220202112211
43022203313333
5102043200111
65134041251
71213225405
oct312436777
9120822484
1053100031
1127a78926
1215949227
13b00244a
1470a3475
1549dd521
hex32a3dff

53100031 has 8 divisors (see below), whose sum is σ = 55982304. Its totient is φ = 50265600.

The previous prime is 53100023. The next prime is 53100053. The reversal of 53100031 is 13000135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53100031 - 23 = 53100023 is a prime.

It is a super-2 number, since 2×531000312 = 5639226584401922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53099984 and 53100020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53100071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9670 + ... + 14131.

It is an arithmetic number, because the mean of its divisors is an integer number (6997788).

Almost surely, 253100031 is an apocalyptic number.

53100031 is a deficient number, since it is larger than the sum of its proper divisors (2882273).

53100031 is a wasteful number, since it uses less digits than its factorization.

53100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23921.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 53100031 is about 7286.9768079774. The cubic root of 53100031 is about 375.8647445271.

Adding to 53100031 its reverse (13000135), we get a palindrome (66100166).

The spelling of 53100031 in words is "fifty-three million, one hundred thousand, thirty-one".

Divisors: 1 23 97 2231 23801 547423 2308697 53100031