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231515445334141 = 1919961231273561
BaseRepresentation
bin110100101000111111100011…
…111000010001000001111101
31010100201122211110002020001201
4310220333203320101001331
5220321122113001143031
62140220421033335501
766523303362556213
oct6450774370210175
91110648743066051
10231515445334141
116784a170328951
1221b712b2267591
139c24a749b57a7
14412559ba66cb3
151bb73ac192d61
hexd28fe3e1107d

231515445334141 has 8 divisors (see below), whose sum is σ = 244925094248000. Its totient is φ = 218228258967840.

The previous prime is 231515445334111. The next prime is 231515445334163. The reversal of 231515445334141 is 141433544515132.

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 231515445334141 - 217 = 231515445203069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231515445334091 and 231515445334100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231515445334111) 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, 30615633000 + ... + 30615640561.

It is an arithmetic number, because the mean of its divisors is an integer number (30615636781000).

Almost surely, 2231515445334141 is an apocalyptic number.

It is an amenable number.

231515445334141 is a deficient number, since it is larger than the sum of its proper divisors (13409648913859).

231515445334141 is a wasteful number, since it uses less digits than its factorization.

231515445334141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61231273779.

The product of its digits is 1728000, while the sum is 46.

Adding to 231515445334141 its reverse (141433544515132), we get a palindrome (372948989849273).

The spelling of 231515445334141 in words is "two hundred thirty-one trillion, five hundred fifteen billion, four hundred forty-five million, three hundred thirty-four thousand, one hundred forty-one".

Divisors: 1 19 199 3781 61231273561 1163394197659 12185023438639 231515445334141