Search a number
-
+
31311310313301 = 331431781161847
BaseRepresentation
bin1110001111010001110111…
…00001110101011101010101
311002212022222001101122202220
413013220323201311131111
513101001030420011201
6150332114542052553
76411111313216134
oct707507341653525
9132768861348686
1031311310313301
119a8206342a007
12361841257a159
13146184a830165
147a3692b0191b
1539472bb38036
hex1c7a3b875755

31311310313301 has 16 divisors (see below), whose sum is σ = 43195125547008. Its totient is φ = 20153975626800.

The previous prime is 31311310313263. The next prime is 31311310313323. The reversal of 31311310313301 is 10331301311313.

It is not a de Polignac number, because 31311310313301 - 225 = 31311276758869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311310313201) 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, 390540841 + ... + 390621006.

It is an arithmetic number, because the mean of its divisors is an integer number (2699695346688).

Almost surely, 231311310313301 is an apocalyptic number.

31311310313301 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31311310313301 is a deficient number, since it is larger than the sum of its proper divisors (11883815233707).

31311310313301 is a wasteful number, since it uses less digits than its factorization.

31311310313301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781162312.

The product of its (nonzero) digits is 729, while the sum is 24.

Adding to 31311310313301 its reverse (10331301311313), we get a palindrome (41642611624614).

The spelling of 31311310313301 in words is "thirty-one trillion, three hundred eleven billion, three hundred ten million, three hundred thirteen thousand, three hundred one".

Divisors: 1 3 31 93 431 1293 13361 40083 781161847 2343485541 24216017257 72648051771 336680756057 1010042268171 10437103437767 31311310313301