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BaseRepresentation
bin100101100100111000101
32022120000202
410230213011
5303400201
642220245
713315541
oct4544705
92276022
101231301
11771105
124b4685
133415a6
14240a21
15194c6b
hex12c9c5

1231301 has 2 divisors, whose sum is σ = 1231302. Its totient is φ = 1231300.

The previous prime is 1231283. The next prime is 1231303. The reversal of 1231301 is 1031321.

Adding to 1231301 its reverse (1031321), we get a palindrome (2262622).

It can be divided in two parts, 12 and 31301, that added together give a palindrome (31313).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638401 + 592900 = 799^2 + 770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1231301 is a prime.

It is a super-2 number, since 2×12313012 = 3032204305202, which contains 22 as substring.

Together with 1231303, 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 (1231303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615650 + 615651.

It is an arithmetic number, because the mean of its divisors is an integer number (615651).

21231301 is an apocalyptic number.

It is an amenable number.

1231301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231301 is an equidigital number, since it uses as much as digits as its factorization.

1231301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1231301 is about 1109.6400317220. The cubic root of 1231301 is about 107.1818899477.

The spelling of 1231301 in words is "one million, two hundred thirty-one thousand, three hundred one".