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131223301032430 = 25174160318553993
BaseRepresentation
bin11101110101100011001110…
…001111101000100111101110
3122012121211021110201111012101
4131311203032033220213232
5114144430310031014210
61143031052520325314
736432366505003615
oct3565431617504756
9565554243644171
10131223301032430
11388a25424a2912
1212873b5601383a
13582b3c53cba39
14245935517687c
151028644c08a3a
hex7758ce3e89ee

131223301032430 has 32 divisors (see below), whose sum is σ = 250102198705824. Its totient is φ = 49400523211776.

The previous prime is 131223301032371. The next prime is 131223301032431. The reversal of 131223301032430 is 34230103322131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131223301032431) 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, 2204487 + ... + 16349506.

It is an arithmetic number, because the mean of its divisors is an integer number (7815693709557).

Almost surely, 2131223301032430 is an apocalyptic number.

131223301032430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131223301032430 is a deficient number, since it is larger than the sum of its proper divisors (118878897673394).

131223301032430 is a wasteful number, since it uses less digits than its factorization.

131223301032430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18595620.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 131223301032430 its reverse (34230103322131), we get a palindrome (165453404354561).

The spelling of 131223301032430 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, three hundred one million, thirty-two thousand, four hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 41603 83206 208015 416030 707251 1414502 3536255 7072510 18553993 37107986 92769965 185539930 315417881 630835762 1577089405 3154178810 771901770779 1543803541558 3859508853895 7719017707790 13122330103243 26244660206486 65611650516215 131223301032430