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131211233241023 = 1343380287617231
BaseRepresentation
bin11101110101010111111110…
…111100101010011110111111
3122012120200010110001011112002
4131311113332330222132333
5114144231101202203043
61143021335225532515
736431461451322365
oct3565277674523677
9565520113034462
10131211233241023
113889840a549591
121287174864413b
13582a2211bca70
14245892c54d635
15102818a546bb8
hex7755fef2a7bf

131211233241023 has 16 divisors (see below), whose sum is σ = 144591168454656. Its totient is φ = 118300859601120.

The previous prime is 131211233241007. The next prime is 131211233241029. The reversal of 131211233241023 is 320142332112131.

It is a cyclic number.

It is not a de Polignac number, because 131211233241023 - 24 = 131211233241007 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 (131211233241029) 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, 212271818 + ... + 212889048.

It is an arithmetic number, because the mean of its divisors is an integer number (9036948028416).

Almost surely, 2131211233241023 is an apocalyptic number.

131211233241023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131211233241023 is a deficient number, since it is larger than the sum of its proper divisors (13379935213633).

131211233241023 is a wasteful number, since it uses less digits than its factorization.

131211233241023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997574.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 131211233241023 its reverse (320142332112131), we get a palindrome (451353565353154).

The spelling of 131211233241023 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred thirty-three million, two hundred forty-one thousand, twenty-three".

Divisors: 1 13 43 559 380287 617231 4943731 8024003 16352341 26540933 212580433 345032129 234724925297 3051424028861 10093171787771 131211233241023