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2148631 is a prime number
BaseRepresentation
bin1000001100100100010111
311001011100221
420030210113
51022224011
6114015211
724156142
oct10144427
94034327
102148631
111238331
12877507
135a2ca4
143dd059
152c6971
hex20c917

2148631 has 2 divisors, whose sum is σ = 2148632. Its totient is φ = 2148630.

The previous prime is 2148617. The next prime is 2148649. The reversal of 2148631 is 1368412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2148631 - 25 = 2148599 is a prime.

It is a super-2 number, since 2×21486312 = 9233230348322, which contains 22 as substring.

2148631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2148596 and 2148605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2148661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074315 + 1074316.

It is an arithmetic number, because the mean of its divisors is an integer number (1074316).

22148631 is an apocalyptic number.

2148631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148631 is an equidigital number, since it uses as much as digits as its factorization.

2148631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 2148631 is about 1465.8209304004. The cubic root of 2148631 is about 129.0388881815.

The spelling of 2148631 in words is "two million, one hundred forty-eight thousand, six hundred thirty-one".