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1322231401 = 4728132583
BaseRepresentation
bin100111011001111…
…1010011001101001
310102011000022111101
41032303322121221
510201442401101
6335112001401
744523532021
oct11663723151
93364008441
101322231401
11619402027
1230a990261
13180c1cc5a
14c786aa81
157b132401
hex4ecfa669

1322231401 has 4 divisors (see below), whose sum is σ = 1350364032. Its totient is φ = 1294098772.

The previous prime is 1322231377. The next prime is 1322231431. The reversal of 1322231401 is 1041322231.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1041322231 = 3832718857.

It is a cyclic number.

It is not a de Polignac number, because 1322231401 - 213 = 1322223209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322231431) 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, 14066245 + ... + 14066338.

It is an arithmetic number, because the mean of its divisors is an integer number (337591008).

Almost surely, 21322231401 is an apocalyptic number.

It is an amenable number.

1322231401 is a deficient number, since it is larger than the sum of its proper divisors (28132631).

1322231401 is an equidigital number, since it uses as much as digits as its factorization.

1322231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28132630.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1322231401 is about 36362.4999278102. The cubic root of 1322231401 is about 1097.5790838659.

Adding to 1322231401 its reverse (1041322231), we get a palindrome (2363553632).

The spelling of 1322231401 in words is "one billion, three hundred twenty-two million, two hundred thirty-one thousand, four hundred one".

Divisors: 1 47 28132583 1322231401