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1231230012301 = 3139717097171
BaseRepresentation
bin10001111010101011000…
…001110000101110001101
311100201000112111010000201
4101322223001300232031
5130133024340343201
62341341432053501
7154645012266412
oct21725301605615
94321015433021
101231230012301
11435186275613
1217a754534291
138c148751a23
1443840076109
15220617cc801
hex11eab070b8d

1231230012301 has 4 divisors (see below), whose sum is σ = 1270947109504. Its totient is φ = 1191512915100.

The previous prime is 1231230012289. The next prime is 1231230012317. The reversal of 1231230012301 is 1032100321321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1231230012301 - 25 = 1231230012269 is a prime.

It is a super-2 number, since 2×12312300123012 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231230012401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19858548555 + ... + 19858548616.

It is an arithmetic number, because the mean of its divisors is an integer number (317736777376).

Almost surely, 21231230012301 is an apocalyptic number.

It is an amenable number.

1231230012301 is a deficient number, since it is larger than the sum of its proper divisors (39717097203).

1231230012301 is an equidigital number, since it uses as much as digits as its factorization.

1231230012301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39717097202.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1231230012301 its reverse (1032100321321), we get a palindrome (2263330333622).

The spelling of 1231230012301 in words is "one trillion, two hundred thirty-one billion, two hundred thirty million, twelve thousand, three hundred one".

Divisors: 1 31 39717097171 1231230012301