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312331402013 = 4753125383943
BaseRepresentation
bin1001000101110000110…
…01101111101100011101
31002212011220122011012012
410202320121233230131
520104123314331023
6355252201521005
731364602053611
oct4427031575435
91085156564165
10312331402013
11110505a30134
12506471a3165
13235b68373a7
141118cb89341
1581d0092978
hex48b866fb1d

312331402013 has 8 divisors (see below), whose sum is σ = 324995182848. Its totient is φ = 299918389264.

The previous prime is 312331401997. The next prime is 312331402049. The reversal of 312331402013 is 310204133213.

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 312331402013 - 24 = 312331401997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312331402013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312331492013) 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, 62689481 + ... + 62694462.

It is an arithmetic number, because the mean of its divisors is an integer number (40624397856).

Almost surely, 2312331402013 is an apocalyptic number.

It is an amenable number.

312331402013 is a deficient number, since it is larger than the sum of its proper divisors (12663780835).

312331402013 is a wasteful number, since it uses less digits than its factorization.

312331402013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125384043.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 312331402013 its reverse (310204133213), we get a palindrome (622535535226).

The spelling of 312331402013 in words is "three hundred twelve billion, three hundred thirty-one million, four hundred two thousand, thirteen".

Divisors: 1 47 53 2491 125383943 5893045321 6645348979 312331402013