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31240231031001 = 389971206233099
BaseRepresentation
bin1110001101001101011101…
…10111111001000011011001
311002121112111102011222220210
413012212232313321003121
513043314443120443001
6150235321454241333
76403014022251636
oct706465667710331
9132545442158823
1031240231031001
119a549a8a931a3
1236066961b6249
131457c30909b35
147a006ca2118d
1539296b8d4dd6
hex1c69aedf90d9

31240231031001 has 16 divisors (see below), whose sum is σ = 42555903768000. Its totient is φ = 20380514423808.

The previous prime is 31240231030973. The next prime is 31240231031021. The reversal of 31240231031001 is 10013013204213.

It is not a de Polignac number, because 31240231031001 - 217 = 31240230899929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31240231031021) 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, 603090651 + ... + 603142448.

It is an arithmetic number, because the mean of its divisors is an integer number (2659743985500).

Almost surely, 231240231031001 is an apocalyptic number.

It is an amenable number.

31240231031001 is a deficient number, since it is larger than the sum of its proper divisors (11315672736999).

31240231031001 is a wasteful number, since it uses less digits than its factorization.

31240231031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206233288.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31240231031001 its reverse (10013013204213), we get a palindrome (41253244235214).

It can be divided in two parts, 312402 and 31031001, that added together give a triangular number (31343403 = T7917).

The spelling of 31240231031001 in words is "thirty-one trillion, two hundred forty billion, two hundred thirty-one million, thirty-one thousand, one".

Divisors: 1 3 89 97 267 291 8633 25899 1206233099 3618699297 107354745811 117004610603 322064237433 351013831809 10413410343667 31240231031001