Search a number
-
+
31143310001 = 198399472063
BaseRepresentation
bin11101000000010010…
…010011001010110001
32222101102122001211222
4131000102103022301
51002240141410001
622150153114425
72151521524106
oct350022231261
988342561758
1031143310001
111223164a831
1260519b8a15
132c241cb0ab
14171621caad
15c241b761b
hex7404932b1

31143310001 has 16 divisors (see below), whose sum is σ = 32872089600. Its totient is φ = 29423634768.

The previous prime is 31143309971. The next prime is 31143310027. The reversal of 31143310001 is 10001334113.

It is a cyclic number.

It is not a de Polignac number, because 31143310001 - 222 = 31139115697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31143310201) 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, 15095096 + ... + 15097158.

It is an arithmetic number, because the mean of its divisors is an integer number (2054505600).

Almost surely, 231143310001 is an apocalyptic number.

It is an amenable number.

31143310001 is a deficient number, since it is larger than the sum of its proper divisors (1728779599).

31143310001 is a wasteful number, since it uses less digits than its factorization.

31143310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31143310001 its reverse (10001334113), we get a palindrome (41144644114).

The spelling of 31143310001 in words is "thirty-one billion, one hundred forty-three million, three hundred ten thousand, one".

Divisors: 1 19 839 947 2063 15941 17993 39197 794533 1730857 1953661 15096127 32886283 37119559 1639121579 31143310001