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131024430321 = 3131333395497
BaseRepresentation
bin111101000000110101…
…0100010010011110001
3110112012022120200211120
41322001222202103301
54121314223232241
6140105232132453
712315623165451
oct1720152422361
9415168520746
10131024430321
1150626969864
1221487997129
13c4811b6815
1464ad575d61
15361cc6d666
hex1e81aa24f1

131024430321 has 8 divisors (see below), whose sum is σ = 176032822944. Its totient is φ = 86682828960.

The previous prime is 131024430319. The next prime is 131024430323. The reversal of 131024430321 is 123034420131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131024430319) and next prime (131024430323).

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

It is not a de Polignac number, because 131024430321 - 21 = 131024430319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131024430291 and 131024430300.

It is not an unprimeable number, because it can be changed into a prime (131024430323) 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, 166697356 + ... + 166698141.

It is an arithmetic number, because the mean of its divisors is an integer number (22004102868).

Almost surely, 2131024430321 is an apocalyptic number.

It is an amenable number.

131024430321 is a deficient number, since it is larger than the sum of its proper divisors (45008392623).

131024430321 is a wasteful number, since it uses less digits than its factorization.

131024430321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333395631.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 131024430321 its reverse (123034420131), we get a palindrome (254058850452).

The spelling of 131024430321 in words is "one hundred thirty-one billion, twenty-four million, four hundred thirty thousand, three hundred twenty-one".

Divisors: 1 3 131 393 333395497 1000186491 43674810107 131024430321