1340422351 has 2 divisors, whose sum is σ = 1340422352. Its totient is φ = 1340422350.

The previous prime is 1340422337. The next prime is 1340422381. The reversal of 1340422351 is 1532240431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340422351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340422331) 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, 670211175 + 670211176.

It is an arithmetic number, because the mean of its divisors is an integer number (670211176).

Almost surely, 2^1340422351 is an apocalyptic number.

1340422351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340422351 is an equidigital number, since it uses as much as digits as its factorization.

1340422351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1340422351 is about 36611.7788559911. The cubic root of 1340422351 is about 1102.5895878647.

Adding to 1340422351 its reverse (1532240431), we get a palindrome (2872662782).

The spelling of 1340422351 in words is "one billion, three hundred forty million, four hundred twenty-two thousand, three hundred fifty-one".