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31312110124 = 2219412001449
BaseRepresentation
bin11101001010010110…
…001110001000101100
32222211012021000002101
4131022112032020230
51003111400010444
622215023104444
72155641354541
oct351226161054
988735230071
1031312110124
1112308962869
12609a442124
132c50180219
1417307dcbc8
15c33e0c3d4
hex74a58e22c

31312110124 has 12 divisors (see below), whose sum is σ = 57680203000. Its totient is φ = 14832052128.

The previous prime is 31312110121. The next prime is 31312110131. The reversal of 31312110124 is 42101121313.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (31312110121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206000649 + ... + 206000800.

Almost surely, 231312110124 is an apocalyptic number.

It is an amenable number.

31312110124 is a deficient number, since it is larger than the sum of its proper divisors (26368092876).

31312110124 is a wasteful number, since it uses less digits than its factorization.

31312110124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412001472 (or 412001470 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31312110124 its reverse (42101121313), we get a palindrome (73413231437).

The spelling of 31312110124 in words is "thirty-one billion, three hundred twelve million, one hundred ten thousand, one hundred twenty-four".

Divisors: 1 2 4 19 38 76 412001449 824002898 1648005796 7828027531 15656055062 31312110124