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30423210401 = 154919640549
BaseRepresentation
bin11100010101010111…
…010101100110100001
32220112020122012220102
4130111113111212201
5444301320213101
621550510552145
72124626010263
oct342527254641
986466565812
1030423210401
11119a21222a1
125a90808655
132b3ac7215c
141688731b33
15bd0d7486b
hex7155d59a1

30423210401 has 4 divisors (see below), whose sum is σ = 30442852500. Its totient is φ = 30403568304.

The previous prime is 30423210379. The next prime is 30423210427. The reversal of 30423210401 is 10401232403.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20370140176 + 10053070225 = 142724^2 + 100265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30423210401 is a prime.

It is a super-3 number, since 3×304232104013 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30423210451) 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, 9818726 + ... + 9821823.

It is an arithmetic number, because the mean of its divisors is an integer number (7610713125).

Almost surely, 230423210401 is an apocalyptic number.

It is an amenable number.

30423210401 is a deficient number, since it is larger than the sum of its proper divisors (19642099).

30423210401 is a wasteful number, since it uses less digits than its factorization.

30423210401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19642098.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30423210401 its reverse (10401232403), we get a palindrome (40824442804).

The spelling of 30423210401 in words is "thirty billion, four hundred twenty-three million, two hundred ten thousand, four hundred one".

Divisors: 1 1549 19640549 30423210401