Search a number
-
+
212020231031 = 764147252113
BaseRepresentation
bin1100010101110101100…
…0111111101101110111
3202021021001110200121022
43011131120333231313
511433204134343111
6241222321211355
721214026141230
oct3053530775567
9667231420538
10212020231031
1181a0a990734
1235111190b5b
1316cbb71830b
14a394688087
1557ad88e2db
hex315d63fb77

212020231031 has 8 divisors (see below), whose sum is σ = 242686857504. Its totient is φ = 181448110080.

The previous prime is 212020231019. The next prime is 212020231037. The reversal of 212020231031 is 130132020212.

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 212020231031 - 210 = 212020230007 is a prime.

It is a super-2 number, since 2×2120202310312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020231037) 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, 23621570 + ... + 23630543.

It is an arithmetic number, because the mean of its divisors is an integer number (30335857188).

Almost surely, 2212020231031 is an apocalyptic number.

212020231031 is a deficient number, since it is larger than the sum of its proper divisors (30666626473).

212020231031 is an equidigital number, since it uses as much as digits as its factorization.

212020231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47252761.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212020231031 its reverse (130132020212), we get a palindrome (342152251243).

The spelling of 212020231031 in words is "two hundred twelve billion, twenty million, two hundred thirty-one thousand, thirty-one".

Divisors: 1 7 641 4487 47252113 330764791 30288604433 212020231031