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2212031031 = 37105334811
BaseRepresentation
bin1000001111011000…
…1110101000110111
312201011022211010020
42003312032220313
514012234443111
61003255300223
7105546645030
oct20366165067
95634284106
102212031031
11a356a7721
1251897a673
13293384802
1416dacda87
15ce2e6906
hex83d8ea37

2212031031 has 8 divisors (see below), whose sum is σ = 3370713984. Its totient is φ = 1264017720.

The previous prime is 2212031027. The next prime is 2212031039. The reversal of 2212031031 is 1301302122.

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

It is not a de Polignac number, because 2212031031 - 22 = 2212031027 is a prime.

It is a super-2 number, since 2×22120310312 = 9786162564213845922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2212031031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212031039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52667385 + ... + 52667426.

It is an arithmetic number, because the mean of its divisors is an integer number (421339248).

Almost surely, 22212031031 is an apocalyptic number.

2212031031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2212031031 is a deficient number, since it is larger than the sum of its proper divisors (1158682953).

2212031031 is a wasteful number, since it uses less digits than its factorization.

2212031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105334821.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2212031031 is about 47032.2339571490. The cubic root of 2212031031 is about 1302.9579648620.

Adding to 2212031031 its reverse (1301302122), we get a palindrome (3513333153).

The spelling of 2212031031 in words is "two billion, two hundred twelve million, thirty-one thousand, thirty-one".

Divisors: 1 3 7 21 105334811 316004433 737343677 2212031031