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1213030010031 = 3777983740717
BaseRepresentation
bin10001101001101110001…
…110010000110010101111
311021222001010222012110120
4101221232032100302233
5124333241140310111
62325131442540023
7153432004650330
oct21515616206257
94258033865416
101213030010031
114284968a9524
12177115367613
138a507c66108
14429d4c66287
1521848ab9406
hex11a6e390caf

1213030010031 has 16 divisors (see below), whose sum is σ = 1848452880384. Its totient is φ = 693150181344.

The previous prime is 1213030010029. The next prime is 1213030010053. The reversal of 1213030010031 is 1300100303121.

It is not a de Polignac number, because 1213030010031 - 21 = 1213030010029 is a prime.

It is a super-2 number, since 2×12130300100312 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213030010021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1267285 + ... + 2008001.

It is an arithmetic number, because the mean of its divisors is an integer number (115528305024).

Almost surely, 21213030010031 is an apocalyptic number.

1213030010031 is a deficient number, since it is larger than the sum of its proper divisors (635422870353).

1213030010031 is an equidigital number, since it uses as much as digits as its factorization.

1213030010031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818710.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 1213030010031 its reverse (1300100303121), we get a palindrome (2513130313152).

The spelling of 1213030010031 in words is "one trillion, two hundred thirteen billion, thirty million, ten thousand, thirty-one".

Divisors: 1 3 7 21 77983 233949 545881 740717 1637643 2222151 5185019 15555057 57763333811 173290001433 404343336677 1213030010031