Search a number
-
+
310145042421 = 352714709657
BaseRepresentation
bin1001000001101100001…
…01011100011111110101
31002122112112121120200000
410200312011130133311
520040134112324141
6354251220341513
731256453235444
oct4406605343765
91078475546600
10310145042421
1110a593877885
1250136b44899
13233288a05a6
141102265cd5b
15810316c5b6
hex483615c7f5

310145042421 has 24 divisors (see below), whose sum is σ = 466293819264. Its totient is φ = 206000353440.

The previous prime is 310145042407. The next prime is 310145042447. The reversal of 310145042421 is 124240541013.

It is not a de Polignac number, because 310145042421 - 218 = 310144780277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310145042321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2288976 + ... + 2420681.

It is an arithmetic number, because the mean of its divisors is an integer number (19428909136).

Almost surely, 2310145042421 is an apocalyptic number.

It is an amenable number.

310145042421 is a deficient number, since it is larger than the sum of its proper divisors (156148776843).

310145042421 is an equidigital number, since it uses as much as digits as its factorization.

310145042421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709943 (or 4709931 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 310145042421 its reverse (124240541013), we get a palindrome (434385583434).

The spelling of 310145042421 in words is "three hundred ten billion, one hundred forty-five million, forty-two thousand, four hundred twenty-one".

Divisors: 1 3 9 27 81 243 271 813 2439 7317 21951 65853 4709657 14128971 42386913 127160739 381482217 1144446651 1276317047 3828951141 11486853423 34460560269 103381680807 310145042421