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13131031123232 = 251137304065691
BaseRepresentation
bin1011111100010100111001…
…1100100001010100100000
31201111022111010200021001122
42333011032130201110200
53210114322431420412
643532151252151412
72523454122644051
oct277051634412440
951438433607048
1013131031123232
11420292581aa90
121580a6b908568
13743335376429
1433578c420728
1517b87ccc8572
hexbf14e721520

13131031123232 has 24 divisors (see below), whose sum is σ = 28201873663152. Its totient is φ = 5968650510400.

The previous prime is 13131031123219. The next prime is 13131031123291. The reversal of 13131031123232 is 23232113013131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18652032494 + ... + 18652033197.

It is an arithmetic number, because the mean of its divisors is an integer number (1175078069298).

Almost surely, 213131031123232 is an apocalyptic number.

It is an amenable number.

13131031123232 is an abundant number, since it is smaller than the sum of its proper divisors (15070842539920).

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

13131031123232 is a wasteful number, since it uses less digits than its factorization.

13131031123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37304065712 (or 37304065704 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 13131031123232 its reverse (23232113013131), we get a palindrome (36363144136363).

The spelling of 13131031123232 in words is "thirteen trillion, one hundred thirty-one billion, thirty-one million, one hundred twenty-three thousand, two hundred thirty-two".

Divisors: 1 2 4 8 11 16 22 32 44 88 176 352 37304065691 74608131382 149216262764 298432525528 410344722601 596865051056 820689445202 1193730102112 1641378890404 3282757780808 6565515561616 13131031123232