Search a number
-
+
1305242410431 = 31002374340521
BaseRepresentation
bin10010111111100110100…
…000101001110110111111
311121210001120212111101110
4102333212200221312333
5132341114024113211
62435341534413103
7163205060300661
oct22774640516677
94553046774343
101305242410431
114636063497a3
12190b6b061193
139611223c04b
144726190c531
1523e442b1ea6
hex12fe6829dbf

1305242410431 has 8 divisors (see below), whose sum is σ = 1740340976944. Its totient is φ = 870152725440.

The previous prime is 1305242410427. The next prime is 1305242410441. The reversal of 1305242410431 is 1340142425031.

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

It is not a de Polignac number, because 1305242410431 - 22 = 1305242410427 is a prime.

It is a super-2 number, since 2×13052424104312 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305242410441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869550 + ... + 2470971.

It is an arithmetic number, because the mean of its divisors is an integer number (217542622118).

Almost surely, 21305242410431 is an apocalyptic number.

1305242410431 is a deficient number, since it is larger than the sum of its proper divisors (435098566513).

1305242410431 is a wasteful number, since it uses less digits than its factorization.

1305242410431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440761.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1305242410431 its reverse (1340142425031), we get a palindrome (2645384835462).

The spelling of 1305242410431 in words is "one trillion, three hundred five billion, two hundred forty-two million, four hundred ten thousand, four hundred thirty-one".

Divisors: 1 3 100237 300711 4340521 13021563 435080803477 1305242410431