131021323 has 2 divisors, whose sum is σ = 131021324. Its totient is φ = 131021322.

The previous prime is 131021311. The next prime is 131021327. The reversal of 131021323 is 323120131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131021323 - 2⁵ = 131021291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131021297 and 131021306.

It is not a weakly prime, because it can be changed into another prime (131021327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510661 + 65510662.

It is an arithmetic number, because the mean of its divisors is an integer number (65510662).

Almost surely, 2^131021323 is an apocalyptic number.

131021323 is a deficient number, since it is larger than the sum of its proper divisors (1).

131021323 is an equidigital number, since it uses as much as digits as its factorization.

131021323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131021323 is about 11446.4546039374. The cubic root of 131021323 is about 507.9028621076.

Adding to 131021323 its reverse (323120131), we get a palindrome (454141454).

The spelling of 131021323 in words is "one hundred thirty-one million, twenty-one thousand, three hundred twenty-three".