Search a number
-
+
1300043431 = 1776473143
BaseRepresentation
bin100110101111101…
…0001011010100111
310100121021001022201
41031133101122213
510130302342211
6333000235331
744134121041
oct11537213247
93317231281
101300043431
11607927965
1230346bb47
1317945198b
14c4932a91
15791ed0c1
hex4d7d16a7

1300043431 has 4 divisors (see below), whose sum is σ = 1376516592. Its totient is φ = 1223570272.

The previous prime is 1300043429. The next prime is 1300043447. The reversal of 1300043431 is 1343400031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1300043431 - 21 = 1300043429 is a prime.

It is a super-2 number, since 2×13000434312 = 3380225844972503522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1300043399 and 1300043408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300043471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38236555 + ... + 38236588.

It is an arithmetic number, because the mean of its divisors is an integer number (344129148).

Almost surely, 21300043431 is an apocalyptic number.

1300043431 is a deficient number, since it is larger than the sum of its proper divisors (76473161).

1300043431 is an equidigital number, since it uses as much as digits as its factorization.

1300043431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76473160.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1300043431 is about 36056.1150292152. The cubic root of 1300043431 is about 1091.4050368448.

Adding to 1300043431 its reverse (1343400031), we get a palindrome (2643443462).

The spelling of 1300043431 in words is "one billion, three hundred million, forty-three thousand, four hundred thirty-one".

Divisors: 1 17 76473143 1300043431