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212303121310 = 25719415373459
BaseRepresentation
bin1100010110111001000…
…0001000101110011110
3202021222202210000010001
43011232100020232132
511434244044340220
6241310344404514
721224032520230
oct3055620105636
9667882700101
10212303121310
1182045639355
123518ba7673a
1317035205407
14a3c0086250
1557c861d80a
hex316e408b9e

212303121310 has 128 divisors (see below), whose sum is σ = 479828966400. Its totient is φ = 66006420480.

The previous prime is 212303121299. The next prime is 212303121311. The reversal of 212303121310 is 13121303212.

It is a super-2 number, since 2×2123031213102 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303121311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2853361 + ... + 2926819.

It is an arithmetic number, because the mean of its divisors is an integer number (3748663800).

Almost surely, 2212303121310 is an apocalyptic number.

212303121310 is an abundant number, since it is smaller than the sum of its proper divisors (267525845090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212303121310 is a wasteful number, since it uses less digits than its factorization.

212303121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73586.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212303121310 its reverse (13121303212), we get a palindrome (225424424522).

The spelling of 212303121310 in words is "two hundred twelve billion, three hundred three million, one hundred twenty-one thousand, three hundred ten".