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31030031331002 = 2115629012505691
BaseRepresentation
bin1110000111000101111011…
…11111101010111010111010
311001212102221020100212101202
413003202331333222322322
513031344001010043002
6145554555525214202
76351563050265144
oct703427577527272
9131772836325352
1031030031331002
11998384280a470
1235919b2861362
13144117241c922
14793c0c075c94
1538c267ca7502
hex1c38bdfeaeba

31030031331002 has 16 divisors (see below), whose sum is σ = 50776525374624. Its totient is φ = 14104529010000.

The previous prime is 31030031330981. The next prime is 31030031331031. The reversal of 31030031331002 is 20013313003013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11130977 + ... + 13636667.

It is an arithmetic number, because the mean of its divisors is an integer number (3173532835914).

Almost surely, 231030031331002 is an apocalyptic number.

31030031331002 is a deficient number, since it is larger than the sum of its proper divisors (19746494043622).

31030031331002 is a wasteful number, since it uses less digits than its factorization.

31030031331002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068605.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31030031331002 its reverse (20013313003013), we get a palindrome (51043344334015).

The spelling of 31030031331002 in words is "thirty-one trillion, thirty billion, thirty-one million, three hundred thirty-one thousand, two".

Divisors: 1 2 11 22 562901 1125802 2505691 5011382 6191911 12383822 27562601 55125202 1410455969591 2820911939182 15515015665501 31030031331002