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70998311 is a prime number
BaseRepresentation
bin1000011101101…
…01100100100111
311221121002101002
410032311210213
5121133421221
611013423515
71521322106
oct416654447
9157532332
1070998311
113709309a
121b93ab9b
131192b047
14960203d
15637680b
hex43b5927

70998311 has 2 divisors, whose sum is σ = 70998312. Its totient is φ = 70998310.

The previous prime is 70998287. The next prime is 70998313. The reversal of 70998311 is 11389907.

It is a strong prime.

It is an emirp because it is prime and its reverse (11389907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70998311 - 214 = 70981927 is a prime.

It is a Sophie Germain prime.

Together with 70998313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70998313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35499155 + 35499156.

It is an arithmetic number, because the mean of its divisors is an integer number (35499156).

Almost surely, 270998311 is an apocalyptic number.

70998311 is a deficient number, since it is larger than the sum of its proper divisors (1).

70998311 is an equidigital number, since it uses as much as digits as its factorization.

70998311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 70998311 is about 8426.0495488693. The cubic root of 70998311 is about 414.0784914227.

The spelling of 70998311 in words is "seventy million, nine hundred ninety-eight thousand, three hundred eleven".