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31032033132 = 2232989172509
BaseRepresentation
bin11100111001101001…
…110011111101101100
32222002200020121200110
4130321221303331230
51002023200030012
622131140100020
72146000633542
oct347151637554
988080217613
1031032033132
1112184856881
126020694610
132c071397a9
141705533d92
15c1953673c
hex739a73f6c

31032033132 has 24 divisors (see below), whose sum is σ = 74904908400. Its totient is φ = 9987320896.

The previous prime is 31032033101. The next prime is 31032033139. The reversal of 31032033132 is 23133023013.

It is a junction number, because it is equal to n+sod(n) for n = 31032033099 and 31032033108.

It is not an unprimeable number, because it can be changed into a prime (31032033139) 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, 44585907 + ... + 44586602.

It is an arithmetic number, because the mean of its divisors is an integer number (3121037850).

Almost surely, 231032033132 is an apocalyptic number.

It is an amenable number.

31032033132 is an abundant number, since it is smaller than the sum of its proper divisors (43872875268).

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

31032033132 is a wasteful number, since it uses less digits than its factorization.

31032033132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89172545 (or 89172543 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31032033132 its reverse (23133023013), we get a palindrome (54165056145).

The spelling of 31032033132 in words is "thirty-one billion, thirty-two million, thirty-three thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 29 58 87 116 174 348 89172509 178345018 267517527 356690036 535035054 1070070108 2586002761 5172005522 7758008283 10344011044 15516016566 31032033132