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231130231331111 = 7231435591498951
BaseRepresentation
bin110100100011011000110011…
…010101011101100100100111
31010022100211112012222022210022
4310203120303111131210213
5220243314203210043421
62135323432404345355
766453415411556120
oct6443306325354447
91108324465868708
10231130231331111
1167710865040962
1221b0a7069a525b
139bc76447755a8
144110a974dd047
151bac3638da7ab
hexd2363355d927

231130231331111 has 8 divisors (see below), whose sum is σ = 275633567798784. Its totient is φ = 189498077861400.

The previous prime is 231130231331093. The next prime is 231130231331161. The reversal of 231130231331111 is 111133132031132.

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

It is not a de Polignac number, because 231130231331111 - 26 = 231130231331047 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 (231130231331161) 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, 717795749315 + ... + 717795749636.

It is an arithmetic number, because the mean of its divisors is an integer number (34454195974848).

Almost surely, 2231130231331111 is an apocalyptic number.

231130231331111 is a deficient number, since it is larger than the sum of its proper divisors (44503336467673).

231130231331111 is a wasteful number, since it uses less digits than its factorization.

231130231331111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435591498981.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 231130231331111 its reverse (111133132031132), we get a palindrome (342263363362243).

The spelling of 231130231331111 in words is "two hundred thirty-one trillion, one hundred thirty billion, two hundred thirty-one million, three hundred thirty-one thousand, one hundred eleven".

Divisors: 1 7 23 161 1435591498951 10049140492657 33018604475873 231130231331111