Search a number
-
+
131303131131 = 3211929223283
BaseRepresentation
bin111101001001001000…
…1101100011111111011
3110112220202000011110210
41322102101230133323
54122402100144011
6140153025442203
712325546125324
oct1722221543773
9415822004423
10131303131131
115075a215907
12215451a0363
13c4c6b67a43
1464d85a344b
1536374716a6
hex1e9246c7fb

131303131131 has 16 divisors (see below), whose sum is σ = 176090693760. Its totient is φ = 87026392320.

The previous prime is 131303131123. The next prime is 131303131139. The reversal of 131303131131 is 131131303131.

It is an interprime number because it is at equal distance from previous prime (131303131123) and next prime (131303131139).

It is not a de Polignac number, because 131303131131 - 23 = 131303131123 is a prime.

It is a super-2 number, since 2×1313031311312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131303131098 and 131303131107.

It is not an unprimeable number, because it can be changed into a prime (131303131139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476416 + ... + 699698.

It is an arithmetic number, because the mean of its divisors is an integer number (11005668360).

Almost surely, 2131303131131 is an apocalyptic number.

131303131131 is a deficient number, since it is larger than the sum of its proper divisors (44787562629).

131303131131 is a wasteful number, since it uses less digits than its factorization.

131303131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224426.

The product of its (nonzero) digits is 243, while the sum is 21.

Adding to 131303131131 its reverse (131131303131), we get a palindrome (262434434262).

The spelling of 131303131131 in words is "one hundred thirty-one billion, three hundred three million, one hundred thirty-one thousand, one hundred thirty-one".

Divisors: 1 3 211 633 929 2787 196019 223283 588057 669849 47112713 141338139 207429907 622289721 43767710377 131303131131