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231331102201213 = 7171943958842027
BaseRepresentation
bin110100100110010011111000…
…001011000001010101111101
31010100002001000020221210110221
4310212103320023001111331
5220310112044130414323
62140000012524301341
766504056236026040
oct6446237013012575
91110061006853427
10231331102201213
1167788a73448713
1221b416260a1851
139c1057732c201
14411a6b1116c57
151bb26bd53555d
hexd264f82c157d

231331102201213 has 8 divisors (see below), whose sum is σ = 279930073252032. Its totient is φ = 186620048834496.

The previous prime is 231331102201211. The next prime is 231331102201217. The reversal of 231331102201213 is 312102201133132.

231331102201213 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231331102201213 - 21 = 231331102201211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231331102201211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971979420895 + ... + 971979421132.

It is an arithmetic number, because the mean of its divisors is an integer number (34991259156504).

Almost surely, 2231331102201213 is an apocalyptic number.

It is an amenable number.

231331102201213 is a deficient number, since it is larger than the sum of its proper divisors (48598971050819).

231331102201213 is a wasteful number, since it uses less digits than its factorization.

231331102201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943958842051.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 231331102201213 its reverse (312102201133132), we get a palindrome (543433303334345).

The spelling of 231331102201213 in words is "two hundred thirty-one trillion, three hundred thirty-one billion, one hundred two million, two hundred one thousand, two hundred thirteen".

Divisors: 1 7 17 119 1943958842027 13607711894189 33047300314459 231331102201213