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2131462993 = 111553124771
BaseRepresentation
bin111111100001011…
…1000101101010001
312111112201112112211
41333002320231101
513331123303433
6551300352121
7103551064552
oct17702705521
95445645484
102131462993
119a4178770
124b59a5641
1327c785a0a
1416311a329
15c71ce8cd
hex7f0b8b51

2131462993 has 8 divisors (see below), whose sum is σ = 2326748256. Its totient is φ = 1936430400.

The previous prime is 2131462981. The next prime is 2131463017. The reversal of 2131462993 is 3992641312.

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 2131462993 - 25 = 2131462961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131462933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45303 + ... + 79468.

It is an arithmetic number, because the mean of its divisors is an integer number (290843532).

Almost surely, 22131462993 is an apocalyptic number.

It is an amenable number.

2131462993 is a deficient number, since it is larger than the sum of its proper divisors (195285263).

2131462993 is a wasteful number, since it uses less digits than its factorization.

2131462993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126335.

The product of its digits is 69984, while the sum is 40.

The square root of 2131462993 is about 46167.7700674399. The cubic root of 2131462993 is about 1286.9428624490.

It can be divided in two parts, 2131 and 462993, that added together give a square (465124 = 6822).

The spelling of 2131462993 in words is "two billion, one hundred thirty-one million, four hundred sixty-two thousand, nine hundred ninety-three".

Divisors: 1 11 1553 17083 124771 1372481 193769363 2131462993