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1013402281 is a prime number
BaseRepresentation
bin111100011001110…
…100101010101001
32121121220011120211
4330121310222221
54033412333111
6244320421121
734053530413
oct7431645251
92547804524
101013402281
11480048151
122434777a1
13131c50528
14988399b3
155de7c521
hex3c674aa9

1013402281 has 2 divisors, whose sum is σ = 1013402282. Its totient is φ = 1013402280.

The previous prime is 1013402263. The next prime is 1013402353. The reversal of 1013402281 is 1822043101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 785120400 + 228281881 = 28020^2 + 15109^2 .

It is an emirp because it is prime and its reverse (1822043101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1013402281 - 27 = 1013402153 is a prime.

It is a super-2 number, since 2×10134022812 = 2053968366272005922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1013402251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506701140 + 506701141.

It is an arithmetic number, because the mean of its divisors is an integer number (506701141).

Almost surely, 21013402281 is an apocalyptic number.

It is an amenable number.

1013402281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013402281 is an equidigital number, since it uses as much as digits as its factorization.

1013402281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1013402281 is about 31833.9799742351. The cubic root of 1013402281 is about 1004.4476163820.

Adding to 1013402281 its reverse (1822043101), we get a palindrome (2835445382).

The spelling of 1013402281 in words is "one billion, thirteen million, four hundred two thousand, two hundred eighty-one".