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1331101217 is a prime number
BaseRepresentation
bin100111101010110…
…1111111000100001
310102202200221121002
41033111233320201
510211230214332
6340030041345
744662113365
oct11725577041
93382627532
101331101217
11623410056
12311949255
13182a07274
14c8ad92a5
157bcd5562
hex4f56fe21

1331101217 has 2 divisors, whose sum is σ = 1331101218. Its totient is φ = 1331101216.

The previous prime is 1331101181. The next prime is 1331101229. The reversal of 1331101217 is 7121011331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1204853521 + 126247696 = 34711^2 + 11236^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331101217 - 224 = 1314324001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331101267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665550608 + 665550609.

It is an arithmetic number, because the mean of its divisors is an integer number (665550609).

Almost surely, 21331101217 is an apocalyptic number.

It is an amenable number.

1331101217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331101217 is an equidigital number, since it uses as much as digits as its factorization.

1331101217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1331101217 is about 36484.2598527091. The cubic root of 1331101217 is about 1100.0278827643.

Adding to 1331101217 its reverse (7121011331), we get a palindrome (8452112548).

The spelling of 1331101217 in words is "one billion, three hundred thirty-one million, one hundred one thousand, two hundred seventeen".