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210023022031 = 1315915960409
BaseRepresentation
bin1100001110011001011…
…0001111110111001111
3202002002212100221220121
43003212112033313033
511420111343201111
6240252214125411
721113365142404
oct3034626176717
9662085327817
10210023022031
118108557aa89
1234854350867
1316a60a0a444
14a2453182ab
1556e337d871
hex30e658fdcf

210023022031 has 4 divisors (see below), whose sum is σ = 210038995600. Its totient is φ = 210007048464.

The previous prime is 210023022023. The next prime is 210023022047. The reversal of 210023022031 is 130220320012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210023022031 - 23 = 210023022023 is a prime.

It is a super-2 number, since 2×2100230220312 (a number of 23 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 = 210023021996 and 210023022014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210023022071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7967046 + ... + 7993363.

It is an arithmetic number, because the mean of its divisors is an integer number (52509748900).

Almost surely, 2210023022031 is an apocalyptic number.

210023022031 is a deficient number, since it is larger than the sum of its proper divisors (15973569).

210023022031 is a wasteful number, since it uses less digits than its factorization.

210023022031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15973568.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 210023022031 its reverse (130220320012), we get a palindrome (340243342043).

The spelling of 210023022031 in words is "two hundred ten billion, twenty-three million, twenty-two thousand, thirty-one".

Divisors: 1 13159 15960409 210023022031