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212050031 = 2233672591
BaseRepresentation
bin11001010001110…
…10000001101111
3112210000020221212
430220322001233
5413241100111
633012545035
75153252444
oct1450720157
9483006855
10212050031
11a9773366
125b02217b
1334c15cbb
142023b9cb
151393998b
hexca3a06f

212050031 has 8 divisors (see below), whose sum is σ = 213663744. Its totient is φ = 210442680.

The previous prime is 212050021. The next prime is 212050043. The reversal of 212050031 is 130050212.

It is a happy number.

212050031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212050031 - 26 = 212049967 is a prime.

It is a super-2 number, since 2×2120500312 = 89930431294201922, 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 = 212049988 and 212050015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212050021) 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, 80546 + ... + 83136.

It is an arithmetic number, because the mean of its divisors is an integer number (26707968).

Almost surely, 2212050031 is an apocalyptic number.

212050031 is a deficient number, since it is larger than the sum of its proper divisors (1613713).

212050031 is a wasteful number, since it uses less digits than its factorization.

212050031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 212050031 is about 14561.9377488025. The cubic root of 212050031 is about 596.3200979722.

The spelling of 212050031 in words is "two hundred twelve million, fifty thousand, thirty-one".

Divisors: 1 223 367 2591 81841 577793 950897 212050031