Search a number
-
+
212762031 = 397731141
BaseRepresentation
bin11001010111001…
…11110110101111
3112211100102122020
430223213312233
5413431341111
633040121223
75162306316
oct1453476657
9484312566
10212762031
11aa10a299
125b306213
13351050c1
142038527d
1513a2a906
hexcae7daf

212762031 has 8 divisors (see below), whose sum is σ = 286607664. Its totient is φ = 140378880.

The previous prime is 212761921. The next prime is 212762047. The reversal of 212762031 is 130267212.

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

It is not a de Polignac number, because 212762031 - 210 = 212761007 is a prime.

It is a super-2 number, since 2×2127620312 = 90535363670489922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212761992 and 212762010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212767031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365280 + ... + 365861.

It is an arithmetic number, because the mean of its divisors is an integer number (35825958).

Almost surely, 2212762031 is an apocalyptic number.

212762031 is a deficient number, since it is larger than the sum of its proper divisors (73845633).

212762031 is an equidigital number, since it uses as much as digits as its factorization.

212762031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731241.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 212762031 is about 14586.3645573529. The cubic root of 212762031 is about 596.9867733294.

The spelling of 212762031 in words is "two hundred twelve million, seven hundred sixty-two thousand, thirty-one".

Divisors: 1 3 97 291 731141 2193423 70920677 212762031