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31031144001 = 32111367359869
BaseRepresentation
bin11100111001100110…
…011010111001000001
32222002121120110000200
4130321212122321001
51002022433102001
622131105035413
72145660241404
oct347146327101
988077513020
1031031144001
11121842a9860
126020325b69
132c06bb7b90
141705381d3b
15c1940d086
hex73999ae41

31031144001 has 48 divisors (see below), whose sum is σ = 53445013440. Its totient is φ = 17100927360.

The previous prime is 31031143981. The next prime is 31031144009. The reversal of 31031144001 is 10044113013.

31031144001 is a `hidden beast` number, since 310 + 311 + 4 + 40 + 0 + 1 = 666.

It is not a de Polignac number, because 31031144001 - 27 = 31031143873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31031144009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93706 + ... + 266163.

It is an arithmetic number, because the mean of its divisors is an integer number (1113437780).

Almost surely, 231031144001 is an apocalyptic number.

It is an amenable number.

31031144001 is a deficient number, since it is larger than the sum of its proper divisors (22413869439).

31031144001 is a wasteful number, since it uses less digits than its factorization.

31031144001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359966 (or 359963 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31031144001 its reverse (10044113013), we get a palindrome (41075257014).

The spelling of 31031144001 in words is "thirty-one billion, thirty-one million, one hundred forty-four thousand, one".

Divisors: 1 3 9 11 13 33 39 67 99 117 143 201 429 603 737 871 1287 2211 2613 6633 7839 9581 28743 86229 359869 1079607 3238821 3958559 4678297 11875677 14034891 24111223 35627031 42104673 51461267 72333669 154383801 217001007 265223453 313445899 463151403 795670359 940337697 2387011077 2821013091 3447904889 10343714667 31031144001