Search a number
-
+
131020311023023 = 1920395752758789
BaseRepresentation
bin11101110010100110001011…
…000110001100110110101111
3122011220102022202012120212211
4131302212023012030312233
5114133114044110214043
61142353522220111251
736411622306254202
oct3562461306146657
9564812282176784
10131020311023023
1138824446975364
1212840745095527
1358152157b5836
14244d5b9d2d939
151023214015a9d
hex77298b18cdaf

131020311023023 has 16 divisors (see below), whose sum is σ = 137988501696000. Its totient is φ = 124059363093792.

The previous prime is 131020311022999. The next prime is 131020311023029. The reversal of 131020311023023 is 320320113020131.

It is a cyclic number.

It is not a de Polignac number, because 131020311023023 - 29 = 131020311022511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131020311022985 and 131020311023003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020311023029) 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, 2228624113 + ... + 2228682901.

It is an arithmetic number, because the mean of its divisors is an integer number (8624281356000).

Almost surely, 2131020311023023 is an apocalyptic number.

131020311023023 is a deficient number, since it is larger than the sum of its proper divisors (6968190672977).

131020311023023 is a wasteful number, since it uses less digits than its factorization.

131020311023023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118374.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131020311023023 its reverse (320320113020131), we get a palindrome (451340424043154).

The spelling of 131020311023023 in words is "one hundred thirty-one trillion, twenty billion, three hundred eleven million, twenty-three thousand, twenty-three".

Divisors: 1 19 2039 38741 57527 58789 1093013 1116991 117297553 119870771 2228653507 2277544649 3381954803 64257141257 6895805843317 131020311023023