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231210302223020 = 22520442435655157
BaseRepresentation
bin110100100100100011010111…
…111011101011001010101100
31010022122111012111111002012112
4310210203113323223022230
5220301122144332114040
62135424314013423152
766462251554120511
oct6444432773531254
91108574174432175
10231210302223020
1167741813a6809a
1221b2213249aab8
139c0206549bb83
1441148d184d308
151bae49d20e365
hexd248d7eeb2ac

231210302223020 has 24 divisors (see below), whose sum is σ = 485541958043184. Its totient is φ = 92484059294016.

The previous prime is 231210302222957. The next prime is 231210302223037. The reversal of 231210302223020 is 20322203012132.

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, 38057282 + ... + 43712438.

It is an arithmetic number, because the mean of its divisors is an integer number (20230914918466).

Almost surely, 2231210302223020 is an apocalyptic number.

231210302223020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231210302223020 is an abundant number, since it is smaller than the sum of its proper divisors (254331655820164).

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

231210302223020 is a wasteful number, since it uses less digits than its factorization.

231210302223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7699409 (or 7699407 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 231210302223020 its reverse (20322203012132), we get a palindrome (251532505235152).

The spelling of 231210302223020 in words is "two hundred thirty-one trillion, two hundred ten billion, three hundred two million, two hundred twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 2044243 4088486 5655157 8176972 10221215 11310314 20442430 22620628 28275785 40884860 56551570 113103140 11560515111151 23121030222302 46242060444604 57802575555755 115605151111510 231210302223020