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22010020031 = 97487465929
BaseRepresentation
bin10100011111111001…
…100100000010111111
32002210220201212101002
4110133321210002333
5330034031120111
614040011040515
71406300040416
oct243771440277
962726655332
1022010020031
11937509a8aa
12432314013b
1320c9c4c9bc
1410cb22c47d
1588c45c63b
hex51fe640bf

22010020031 has 8 divisors (see below), whose sum is σ = 22282636320. Its totient is φ = 21738336768.

The previous prime is 22010019991. The next prime is 22010020049. The reversal of 22010020031 is 13002001022.

It is a happy number.

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 22010020031 - 226 = 21942911167 is a prime.

It is a super-2 number, since 2×220100200312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22010019994 and 22010020021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010020531) 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, 185726 + ... + 280203.

It is an arithmetic number, because the mean of its divisors is an integer number (2785329540).

Almost surely, 222010020031 is an apocalyptic number.

22010020031 is a deficient number, since it is larger than the sum of its proper divisors (272616289).

22010020031 is an equidigital number, since it uses as much as digits as its factorization.

22010020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466513.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 22010020031 its reverse (13002001022), we get a palindrome (35012021053).

The spelling of 22010020031 in words is "twenty-two billion, ten million, twenty thousand, thirty-one".

Divisors: 1 97 487 47239 465929 45195113 226907423 22010020031