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13031000023111 = 723949411157637
BaseRepresentation
bin1011110110100000010000…
…1000001010000001000111
31201010202021210111212110121
42331220010020022001013
53201444442001214421
643414205254402411
72513313220425460
oct275500410120107
951122253455417
1013031000023111
114174463882a04
1215655b3660407
13736a83298065
143309bd1c5d67
15178e75e98d41
hexbda0420a047

13031000023111 has 16 divisors (see below), whose sum is σ = 14955281003520. Its totient is φ = 11122398917280.

The previous prime is 13031000023087. The next prime is 13031000023199. The reversal of 13031000023111 is 11132000013031.

It is not a de Polignac number, because 13031000023111 - 211 = 13031000021063 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 (13031000020111) 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, 82585785 + ... + 82743421.

It is an arithmetic number, because the mean of its divisors is an integer number (934705062720).

Almost surely, 213031000023111 is an apocalyptic number.

13031000023111 is a deficient number, since it is larger than the sum of its proper divisors (1924280980409).

13031000023111 is a wasteful number, since it uses less digits than its factorization.

13031000023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207294.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 13031000023111 its reverse (11132000013031), we get a palindrome (24163000036142).

The spelling of 13031000023111 in words is "thirteen trillion, thirty-one billion, twenty-three thousand, one hundred eleven".

Divisors: 1 7 239 1673 49411 157637 345877 1103459 11809229 37675243 82664603 263726701 7789001807 54523012649 1861571431873 13031000023111