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1210032993 = 313191938461
BaseRepresentation
bin100100000011111…
…1010001101100001
310010022220001012210
41020013322031201
54434232023433
6320023112333
741662052661
oct11007721541
93108801183
101210032993
11571039774
122992a26a9
131638c8070
14b69c21a1
157136d463
hex481fa361

1210032993 has 32 divisors (see below), whose sum is σ = 1838623360. Its totient is φ = 701706240.

The previous prime is 1210032991. The next prime is 1210032997. The reversal of 1210032993 is 3992300121.

It is a happy number.

It is not a de Polignac number, because 1210032993 - 21 = 1210032991 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 1210032993.

It is not an unprimeable number, because it can be changed into a prime (1210032991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138783 + ... + 147243.

It is an arithmetic number, because the mean of its divisors is an integer number (57456980).

Almost surely, 21210032993 is an apocalyptic number.

1210032993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1210032993 is a deficient number, since it is larger than the sum of its proper divisors (628590367).

1210032993 is a wasteful number, since it uses less digits than its factorization.

1210032993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8689.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1210032993 is about 34785.5284996505. The cubic root of 1210032993 is about 1065.6119219168.

The spelling of 1210032993 in words is "one billion, two hundred ten million, thirty-two thousand, nine hundred ninety-three".

Divisors: 1 3 13 19 39 57 193 247 579 741 2509 3667 7527 8461 11001 25383 47671 109993 143013 160759 329979 482277 1632973 2089867 4898919 6269601 21228649 31026487 63685947 93079461 403344331 1210032993