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31212101222133 = 313800310287747
BaseRepresentation
bin1110001100011001000100…
…01101001011111011110101
311002111211212222222122110220
413012030202031023323311
513042334340403102013
6150214350311004553
76400666651651236
oct706144215137365
9132454788878426
1031212101222133
119a43a83495477
123601145669759
131455399b3c610
1479c960b2108d
15391d7207bb23
hex1c632234bef5

31212101222133 has 8 divisors (see below), whose sum is σ = 44817376113888. Its totient is φ = 19207446905904.

The previous prime is 31212101222119. The next prime is 31212101222161. The reversal of 31212101222133 is 33122210121213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31212101222133 - 25 = 31212101222101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212101212133) 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, 400155143835 + ... + 400155143912.

It is an arithmetic number, because the mean of its divisors is an integer number (5602172014236).

Almost surely, 231212101222133 is an apocalyptic number.

It is an amenable number.

31212101222133 is a deficient number, since it is larger than the sum of its proper divisors (13605274891755).

31212101222133 is a wasteful number, since it uses less digits than its factorization.

31212101222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800310287763.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 31212101222133 its reverse (33122210121213), we get a palindrome (64334311343346).

The spelling of 31212101222133 in words is "thirty-one trillion, two hundred twelve billion, one hundred one million, two hundred twenty-two thousand, one hundred thirty-three".

Divisors: 1 3 13 39 800310287747 2400930863241 10404033740711 31212101222133