1345132231 has 2 divisors, whose sum is σ = 1345132232. Its totient is φ = 1345132230.

The previous prime is 1345132193. The next prime is 1345132247. The reversal of 1345132231 is 1322315431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1345132231 - 2¹⁷ = 1345001159 is a prime.

It is a super-2 number, since 2×1345132231² = 3618761437750074722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1345132196 and 1345132205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345132291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672566115 + 672566116.

It is an arithmetic number, because the mean of its divisors is an integer number (672566116).

Almost surely, 2^1345132231 is an apocalyptic number.

1345132231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345132231 is an equidigital number, since it uses as much as digits as its factorization.

1345132231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 1345132231 is about 36676.0443750413. The cubic root of 1345132231 is about 1103.8794783608.

Adding to 1345132231 its reverse (1322315431), we get a palindrome (2667447662).

The spelling of 1345132231 in words is "one billion, three hundred forty-five million, one hundred thirty-two thousand, two hundred thirty-one".