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31203010030 = 2523269350377
BaseRepresentation
bin11101000011110110…
…000010010111101110
32222112120222010220011
4131003312002113232
51002400432310110
622200124443434
72153145131503
oct350366022756
988476863804
1031203010030
11122623162a5
1260699a957a
132c336a165a
14172011d4aa
15c2955b48a
hex743d825ee

31203010030 has 32 divisors (see below), whose sum is σ = 58630319424. Its totient is φ = 11933872896.

The previous prime is 31203010021. The next prime is 31203010037. The reversal of 31203010030 is 3001030213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203010037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594202 + ... + 644578.

It is an arithmetic number, because the mean of its divisors is an integer number (1832197482).

Almost surely, 231203010030 is an apocalyptic number.

31203010030 is a deficient number, since it is larger than the sum of its proper divisors (27427309394).

31203010030 is a wasteful number, since it uses less digits than its factorization.

31203010030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53100.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 31203010030 its reverse (3001030213), we get a palindrome (34204040243).

The spelling of 31203010030 in words is "thirty-one billion, two hundred three million, ten thousand, thirty".

Divisors: 1 2 5 10 23 46 115 230 2693 5386 13465 26930 50377 61939 100754 123878 251885 309695 503770 619390 1158671 2317342 5793355 11586710 135665261 271330522 678326305 1356652610 3120301003 6240602006 15601505015 31203010030