Search a number
-
+
1431430379 = 17194431673
BaseRepresentation
bin101010101010001…
…1110010011101011
310200202111012022222
41111110132103223
510412421233004
6354012304255
750320646261
oct12524362353
93622435288
101431430379
11675006915
1233b47208b
1319a734832
14d8174431
1585a027be
hex5551e4eb

1431430379 has 8 divisors (see below), whose sum is σ = 1595402640. Its totient is φ = 1276321536.

The previous prime is 1431430373. The next prime is 1431430391. The reversal of 1431430379 is 9730341341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1431430379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1431430373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215514 + ... + 2216159.

It is an arithmetic number, because the mean of its divisors is an integer number (199425330).

Almost surely, 21431430379 is an apocalyptic number.

1431430379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1431430379 is a deficient number, since it is larger than the sum of its proper divisors (163972261).

1431430379 is a wasteful number, since it uses less digits than its factorization.

1431430379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431709.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1431430379 is about 37834.2487569134. The cubic root of 1431430379 is about 1126.9986867460.

The spelling of 1431430379 in words is "one billion, four hundred thirty-one million, four hundred thirty thousand, three hundred seventy-nine".

Divisors: 1 17 19 323 4431673 75338441 84201787 1431430379