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12883931 is a prime number
BaseRepresentation
bin110001001001…
…011111011011
3220020120102122
4301021133123
511244241211
61140051455
7214340324
oct61113733
926216378
1012883931
1172aa985
124393b8b
132891438
1419d544b
1511e76db
hexc497db

12883931 has 2 divisors, whose sum is σ = 12883932. Its totient is φ = 12883930.

The previous prime is 12883903. The next prime is 12883951. The reversal of 12883931 is 13938821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12883931 - 218 = 12621787 is a prime.

It is a super-2 number, since 2×128839312 = 331991356025522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12883891 and 12883900.

It is not a weakly prime, because it can be changed into another prime (12883951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6441965 + 6441966.

It is an arithmetic number, because the mean of its divisors is an integer number (6441966).

Almost surely, 212883931 is an apocalyptic number.

12883931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12883931 is an equidigital number, since it uses as much as digits as its factorization.

12883931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 12883931 is about 3589.4193123679. The cubic root of 12883931 is about 234.4315883745.

The spelling of 12883931 in words is "twelve million, eight hundred eighty-three thousand, nine hundred thirty-one".