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12311933 is a prime number
BaseRepresentation
bin101110111101…
…110101111101
3212011111210112
4232331311331
511122440213
61115515405
7206435564
oct56756575
925144715
1012311933
116a4a157
124158b65
132720c8a
1418c6bdb
151132ea8
hexbbdd7d

12311933 has 2 divisors, whose sum is σ = 12311934. Its totient is φ = 12311932.

The previous prime is 12311917. The next prime is 12311939. The reversal of 12311933 is 33911321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10067929 + 2244004 = 3173^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 12311933 - 24 = 12311917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12311899 and 12311908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155966 + 6155967.

It is an arithmetic number, because the mean of its divisors is an integer number (6155967).

It is a self-describing number.

Almost surely, 212311933 is an apocalyptic number.

It is an amenable number.

12311933 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311933 is an equidigital number, since it uses as much as digits as its factorization.

12311933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 23.

The square root of 12311933 is about 3508.8364168197. The cubic root of 12311933 is about 230.9096490169.

The spelling of 12311933 in words is "twelve million, three hundred eleven thousand, nine hundred thirty-three".