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71428662031 is a prime number
BaseRepresentation
bin100001010000101111…
…0101110001100001111
320211100222121222202011
41002201132232030033
52132241214141111
652451444042051
75106032416036
oct1024136561417
9224328558664
1071428662031
1128324687aa1
1211a15393327
1369744200bc
14365866971d
151cd0c68021
hex10a17ae30f

71428662031 has 2 divisors, whose sum is σ = 71428662032. Its totient is φ = 71428662030.

The previous prime is 71428662007. The next prime is 71428662037. The reversal of 71428662031 is 13026682417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71428662031 - 233 = 62838727439 is a prime.

It is a super-2 number, since 2×714286620312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71428662037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35714331015 + 35714331016.

It is an arithmetic number, because the mean of its divisors is an integer number (35714331016).

Almost surely, 271428662031 is an apocalyptic number.

71428662031 is a deficient number, since it is larger than the sum of its proper divisors (1).

71428662031 is an equidigital number, since it uses as much as digits as its factorization.

71428662031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 71428662031 in words is "seventy-one billion, four hundred twenty-eight million, six hundred sixty-two thousand, thirty-one".