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1323023131 = 11031199477
BaseRepresentation
bin100111011011011…
…1011101100011011
310102012111112112201
41032312323230123
510202143220011
6335140551031
744533340203
oct11666735433
93365445481
101323023131
116198a2951
1230b0b2477
13181139431
14c79d5403
157b23bcc1
hex4edbbb1b

1323023131 has 4 divisors (see below), whose sum is σ = 1324223712. Its totient is φ = 1321822552.

The previous prime is 1323023129. The next prime is 1323023197. The reversal of 1323023131 is 1313203231.

Adding to 1323023131 its reverse (1313203231), we get a palindrome (2636226362).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313203231 = 4691279941.

It is a cyclic number.

It is not a de Polignac number, because 1323023131 - 21 = 1323023129 is a prime.

It is a super-2 number, since 2×13230231312 = 3500780410322086322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323023099 and 1323023108.

It is not an unprimeable number, because it can be changed into a prime (1323023101) 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, 598636 + ... + 600841.

It is an arithmetic number, because the mean of its divisors is an integer number (331055928).

Almost surely, 21323023131 is an apocalyptic number.

1323023131 is a deficient number, since it is larger than the sum of its proper divisors (1200581).

1323023131 is a wasteful number, since it uses less digits than its factorization.

1323023131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200580.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1323023131 is about 36373.3849263442. The cubic root of 1323023131 is about 1097.7981108079.

The spelling of 1323023131 in words is "one billion, three hundred twenty-three million, twenty-three thousand, one hundred thirty-one".

Divisors: 1 1103 1199477 1323023131