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31010231032 = 23113121112909
BaseRepresentation
bin11100111000010110…
…101001001011111000
32222001011012221211021
4130320112221023320
51002002104343112
622125040512224
72145314420554
oct347026511370
988034187737
1031010231032
1112173515610
12601531b674
132c02775041
14170269a864
15c1767b907
hex7385a92f8

31010231032 has 32 divisors (see below), whose sum is σ = 63450903600. Its totient is φ = 14090918400.

The previous prime is 31010231027. The next prime is 31010231033. The reversal of 31010231032 is 23013201013.

It is a junction number, because it is equal to n+sod(n) for n = 31010230997 and 31010231015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010231033) 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, 218194 + ... + 331102.

Almost surely, 231010231032 is an apocalyptic number.

It is an amenable number.

31010231032 is an abundant number, since it is smaller than the sum of its proper divisors (32440672568).

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

31010231032 is a wasteful number, since it uses less digits than its factorization.

31010231032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116047 (or 116043 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31010231032 its reverse (23013201013), we get a palindrome (54023432045).

The spelling of 31010231032 in words is "thirty-one billion, ten million, two hundred thirty-one thousand, thirty-two".

Divisors: 1 2 4 8 11 22 44 88 3121 6242 12484 24968 34331 68662 112909 137324 225818 274648 451636 903272 1241999 2483998 4967996 9935992 352388989 704777978 1409555956 2819111912 3876278879 7752557758 15505115516 31010231032