Search a number
-
+
680754081431 is a prime number
BaseRepresentation
bin10011110100000000001…
…10101110111010010111
32102002010220220102202002
421322000012232322113
542123141021101211
61240422322305515
7100116502134524
oct11720006567227
92362126812662
10680754081431
11242784a28176
12abb271b829b
134c26c088748
1424d3d23414b
1512a9464303b
hex9e801aee97

680754081431 has 2 divisors, whose sum is σ = 680754081432. Its totient is φ = 680754081430.

The previous prime is 680754081389. The next prime is 680754081451. The reversal of 680754081431 is 134180457086.

680754081431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680754081431 - 26 = 680754081367 is a prime.

It is a super-2 number, since 2×6807540814312 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680754081451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340377040715 + 340377040716.

It is an arithmetic number, because the mean of its divisors is an integer number (340377040716).

Almost surely, 2680754081431 is an apocalyptic number.

680754081431 is a deficient number, since it is larger than the sum of its proper divisors (1).

680754081431 is an equidigital number, since it uses as much as digits as its factorization.

680754081431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 680754081431 in words is "six hundred eighty billion, seven hundred fifty-four million, eighty-one thousand, four hundred thirty-one".