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31003760830 = 2571313380999
BaseRepresentation
bin11100110111111101…
…111101100010111110
32222000201001020101011
4130313331331202332
51001443430321310
622124250105434
72145205422160
oct346775754276
988021036334
1031003760830
111216a8a6439
12601311b27a
132c0131b013
141701894930
15c16cee78a
hex737f7d8be

31003760830 has 32 divisors (see below), whose sum is σ = 64266048000. Its totient is φ = 10548713760.

The previous prime is 31003760819. The next prime is 31003760831. The reversal of 31003760830 is 3806730013.

It is a super-2 number, since 2×310037608302 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003760792 and 31003760801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003760831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1681330 + ... + 1699669.

It is an arithmetic number, because the mean of its divisors is an integer number (2008314000).

Almost surely, 231003760830 is an apocalyptic number.

31003760830 is an abundant number, since it is smaller than the sum of its proper divisors (33262287170).

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

31003760830 is a wasteful number, since it uses less digits than its factorization.

31003760830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381144.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 31003760830 in words is "thirty-one billion, three million, seven hundred sixty thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 131 262 655 917 1310 1834 4585 9170 3380999 6761998 16904995 23666993 33809990 47333986 118334965 236669930 442910869 885821738 2214554345 3100376083 4429108690 6200752166 15501880415 31003760830