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231130130322020 = 22514601179148191
BaseRepresentation
bin110100100011011000101101…
…010100001001001001100100
31010022100211021011220112100212
4310203120231110021021210
5220243314001330301040
62135323414355354552
766453413044162016
oct6443305524111144
91108324234815325
10231130130322020
1167710813020276
1221b0a698bb2a58
139bc762986a6b7
144110a87d281b6
151bac359ad6d65
hexd2362d509264

231130130322020 has 24 divisors (see below), whose sum is σ = 485376604032768. Its totient is φ = 92451417775200.

The previous prime is 231130130321903. The next prime is 231130130322079. The reversal of 231130130322020 is 20223031031132.

It is a super-2 number, since 2×2311301303220202 (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36653876 + ... + 42494315.

It is an arithmetic number, because the mean of its divisors is an integer number (20224025168032).

Almost surely, 2231130130322020 is an apocalyptic number.

231130130322020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231130130322020 is an abundant number, since it is smaller than the sum of its proper divisors (254246473710748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231130130322020 is a wasteful number, since it uses less digits than its factorization.

231130130322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79294211 (or 79294209 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231130130322020 its reverse (20223031031132), we get a palindrome (251353161353152).

The spelling of 231130130322020 in words is "two hundred thirty-one trillion, one hundred thirty billion, one hundred thirty million, three hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 146011 292022 584044 730055 1460110 2920220 79148191 158296382 316592764 395740955 791481910 1582963820 11556506516101 23113013032202 46226026064404 57782532580505 115565065161010 231130130322020