Search a number
-
+
31474141 is a prime number
BaseRepresentation
bin111100000010…
…0000111011101
32012020001101221
41320010013131
531024133031
63042333341
7531345226
oct170040735
965201357
1031474141
1116847a96
12a65a251
13669cc6a
14427424d
152b6aa11
hex1e041dd

31474141 has 2 divisors, whose sum is σ = 31474142. Its totient is φ = 31474140.

The previous prime is 31474129. The next prime is 31474171. The reversal of 31474141 is 14147413.

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., 25452025 + 6022116 = 5045^2 + 2454^2 .

It is a cyclic number.

It is not a de Polignac number, because 31474141 - 215 = 31441373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31474111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15737070 + 15737071.

It is an arithmetic number, because the mean of its divisors is an integer number (15737071).

Almost surely, 231474141 is an apocalyptic number.

It is an amenable number.

31474141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31474141 is an equidigital number, since it uses as much as digits as its factorization.

31474141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 31474141 is about 5610.1819043593. The cubic root of 31474141 is about 315.7315357250.

The spelling of 31474141 in words is "thirty-one million, four hundred seventy-four thousand, one hundred forty-one".