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20010312010 = 2513181850417
BaseRepresentation
bin10010101000101101…
…010010000101001010
31220122112221011200001
4102220231102011022
5311440114441020
613105334233214
71305605563033
oct225055220512
956575834601
1020010312010
118539332647
123a654b580a
131b6b878510
14d7b80ba8a
157c1b0650a
hex4a8b5214a

20010312010 has 32 divisors (see below), whose sum is σ = 39003571152. Its totient is φ = 7347594240.

The previous prime is 20010311987. The next prime is 20010312059. The reversal of 20010312010 is 1021301002.

It can be written as a sum of positive squares in 8 ways, for example, as 582691321 + 19427620689 = 24139^2 + 139383^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401679 + ... + 448738.

Almost surely, 220010312010 is an apocalyptic number.

20010312010 is a deficient number, since it is larger than the sum of its proper divisors (18993259142).

20010312010 is a wasteful number, since it uses less digits than its factorization.

20010312010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850618.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20010312010 its reverse (1021301002), we get a palindrome (21031613012).

The spelling of 20010312010 in words is "twenty billion, ten million, three hundred twelve thousand, ten".

Divisors: 1 2 5 10 13 26 65 130 181 362 905 1810 2353 4706 11765 23530 850417 1700834 4252085 8504170 11055421 22110842 55277105 110554210 153925477 307850954 769627385 1539254770 2001031201 4002062402 10005156005 20010312010