1340532131 has 2 divisors, whose sum is σ = 1340532132. Its totient is φ = 1340532130.

The previous prime is 1340532107. The next prime is 1340532133. The reversal of 1340532131 is 1312350431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340532131 is a prime.

It is a super-2 number, since 2×1340532131² = 3594052788486802322, which contains 22 as substring.

Together with 1340532133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1340532097 and 1340532106.

It is not a weakly prime, because it can be changed into another prime (1340532133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670266065 + 670266066.

It is an arithmetic number, because the mean of its divisors is an integer number (670266066).

Almost surely, 2^1340532131 is an apocalyptic number.

1340532131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340532131 is an equidigital number, since it uses as much as digits as its factorization.

1340532131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1340532131 is about 36613.2780695747. The cubic root of 1340532131 is about 1102.6196875768.

Adding to 1340532131 its reverse (1312350431), we get a palindrome (2652882562).

The spelling of 1340532131 in words is "one billion, three hundred forty million, five hundred thirty-two thousand, one hundred thirty-one".