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31310133001 = 782113614003
BaseRepresentation
bin11101001010001110…
…101011011100001001
32222211001112112222121
4131022032223130021
51003110343224001
622214512451241
72155615511410
oct351216533411
988731475877
1031310133001
1112307832384
126099849b21
132c4c93a324
141730446477
15c33b6b6a1
hex74a3ab709

31310133001 has 16 divisors (see below), whose sum is σ = 35861874048. Its totient is φ = 26778182400.

The previous prime is 31310132977. The next prime is 31310133037. The reversal of 31310133001 is 10033101313.

It is a cyclic number.

It is not a de Polignac number, because 31310133001 - 25 = 31310132969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31310133601) 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, 7819666 + ... + 7823668.

It is an arithmetic number, because the mean of its divisors is an integer number (2241367128).

Almost surely, 231310133001 is an apocalyptic number.

It is an amenable number.

31310133001 is a deficient number, since it is larger than the sum of its proper divisors (4551741047).

31310133001 is a wasteful number, since it uses less digits than its factorization.

31310133001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192.

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 31310133001 its reverse (10033101313), we get a palindrome (41343234314).

The spelling of 31310133001 in words is "thirty-one billion, three hundred ten million, one hundred thirty-three thousand, one".

Divisors: 1 7 821 1361 4003 5747 9527 28021 1117381 3286463 5448083 7821667 23005241 38136581 4472876143 31310133001