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30031030202231 = 51895787440779
BaseRepresentation
bin1101101010000001001001…
…11000110010111101110111
310221022221100010111100122102
412311000210320302331313
512414012022212432411
6143512022000052315
76216445631636132
oct665004470627567
9127287303440572
1030031030202231
1196290a7707293
12345026b30409b
13139abb6087566
1475b71c565219
1537129909cd3b
hex1b5024e32f77

30031030202231 has 4 divisors (see below), whose sum is σ = 30036817648200. Its totient is φ = 30025242756264.

The previous prime is 30031030202203. The next prime is 30031030202263. The reversal of 30031030202231 is 13220203013003.

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

It is a cyclic number.

It is not a de Polignac number, because 30031030202231 - 242 = 25632983691127 is a prime.

It is a super-3 number, since 3×300310302022313 (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031030202531) 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, 2893715201 + ... + 2893725578.

It is an arithmetic number, because the mean of its divisors is an integer number (7509204412050).

Almost surely, 230031030202231 is an apocalyptic number.

30031030202231 is a deficient number, since it is larger than the sum of its proper divisors (5787445969).

30031030202231 is an equidigital number, since it uses as much as digits as its factorization.

30031030202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787445968.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30031030202231 its reverse (13220203013003), we get a palindrome (43251233215234).

The spelling of 30031030202231 in words is "thirty trillion, thirty-one billion, thirty million, two hundred two thousand, two hundred thirty-one".

Divisors: 1 5189 5787440779 30031030202231