Search a number
-
+
31394201 is a prime number
BaseRepresentation
bin111011111000…
…0100110011001
32012001222202012
41313300212121
531014103301
63040515305
7530563166
oct167604631
965058665
1031394201
11167a2a23
12a61bb35
136672767
14425306d
152b51ebb
hex1df0999

31394201 has 2 divisors, whose sum is σ = 31394202. Its totient is φ = 31394200.

The previous prime is 31394197. The next prime is 31394221. The reversal of 31394201 is 10249313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16801801 + 14592400 = 4099^2 + 3820^2 .

It is a cyclic number.

It is not a de Polignac number, because 31394201 - 22 = 31394197 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31394221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15697100 + 15697101.

It is an arithmetic number, because the mean of its divisors is an integer number (15697101).

Almost surely, 231394201 is an apocalyptic number.

It is an amenable number.

31394201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31394201 is an equidigital number, since it uses as much as digits as its factorization.

31394201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 31394201 is about 5603.0528285926. The cubic root of 31394201 is about 315.4640041714.

The spelling of 31394201 in words is "thirty-one million, three hundred ninety-four thousand, two hundred one".