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31212011341 = 719234676777
BaseRepresentation
bin11101000100011000…
…010111111101001101
32222120012220110101001
4131010120113331031
51002410233330331
622201045420301
72153314501420
oct350430277515
988505813331
1031212011341
11122674040a5
126070a0a691
132c35503784
1417213c39b7
15c2a238561
hex744617f4d

31212011341 has 8 divisors (see below), whose sum is σ = 37548284480. Its totient is φ = 25345091808.

The previous prime is 31212011323. The next prime is 31212011353. The reversal of 31212011341 is 14311021213.

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

It is a cyclic number.

It is not a de Polignac number, because 31212011341 - 213 = 31212003149 is a prime.

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 (31212011041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117338256 + ... + 117338521.

It is an arithmetic number, because the mean of its divisors is an integer number (4693535560).

Almost surely, 231212011341 is an apocalyptic number.

It is an amenable number.

31212011341 is a deficient number, since it is larger than the sum of its proper divisors (6336273139).

31212011341 is a wasteful number, since it uses less digits than its factorization.

31212011341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234676803.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31212011341 its reverse (14311021213), we get a palindrome (45523032554).

The spelling of 31212011341 in words is "thirty-one billion, two hundred twelve million, eleven thousand, three hundred forty-one".

Divisors: 1 7 19 133 234676777 1642737439 4458858763 31212011341