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31300331413 = 1389971511847
BaseRepresentation
bin11101001001101001…
…010010011110010101
32222210101002120201211
4131021221102132111
51003100341101123
622213522421421
72155436266351
oct351151223625
988711076654
1031300331413
111230224829a
126096501871
132c4a8b7b80
14172d014461
15c32d8240d
hex749a52795

31300331413 has 32 divisors (see below), whose sum is σ = 34685038080. Its totient is φ = 28071014400.

The previous prime is 31300331389. The next prime is 31300331429. The reversal of 31300331413 is 31413300313.

It is a de Polignac number, because none of the positive numbers 2k-31300331413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300331443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16945656 + ... + 16947502.

It is an arithmetic number, because the mean of its divisors is an integer number (1083907440).

Almost surely, 231300331413 is an apocalyptic number.

It is an amenable number.

31300331413 is a deficient number, since it is larger than the sum of its proper divisors (3384706667).

31300331413 is a wasteful number, since it uses less digits than its factorization.

31300331413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31300331413 its reverse (31413300313), we get a palindrome (62713631726).

The spelling of 31300331413 in words is "thirty-one billion, three hundred million, three hundred thirty-one thousand, four hundred thirteen".

Divisors: 1 13 89 97 151 1157 1261 1847 1963 8633 13439 14647 24011 112229 164383 174707 179159 190411 278897 1303583 2136979 2329067 3625661 15945151 16946579 24821833 27053009 207286963 322683829 351689117 2407717801 31300331413