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31012300552 = 2331988312653
BaseRepresentation
bin11100111000011110…
…100010011100001000
32222001022010002200011
4130320132202130020
51002003122104202
622125153121304
72145341130262
oct347036423410
988038102604
1031012300552
11121746a9462
126015b59234
132c0301accc
141702a78b32
15c17939bd7
hex7387a2708

31012300552 has 32 divisors (see below), whose sum is σ = 60034625280. Its totient is φ = 15003247680.

The previous prime is 31012300549. The next prime is 31012300559. The reversal of 31012300552 is 25500321013.

It is not an unprimeable number, because it can be changed into a prime (31012300559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2444658 + ... + 2457310.

It is an arithmetic number, because the mean of its divisors is an integer number (1876082040).

Almost surely, 231012300552 is an apocalyptic number.

It is an amenable number.

31012300552 is a deficient number, since it is larger than the sum of its proper divisors (29022324728).

31012300552 is a wasteful number, since it uses less digits than its factorization.

31012300552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22573 (or 22569 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 31012300552 its reverse (25500321013), we get a palindrome (56512621565).

The spelling of 31012300552 in words is "thirty-one billion, twelve million, three hundred thousand, five hundred fifty-two".

Divisors: 1 2 4 8 31 62 124 248 9883 12653 19766 25306 39532 50612 79064 101224 306373 392243 612746 784486 1225492 1568972 2450984 3137944 125049599 250099198 500198396 1000396792 3876537569 7753075138 15506150276 31012300552