1340220151 has 2 divisors, whose sum is σ = 1340220152. Its totient is φ = 1340220150.

The previous prime is 1340220149. The next prime is 1340220199. The reversal of 1340220151 is 1510220431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340220151 - 2¹ = 1340220149 is a prime.

Together with 1340220149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340223151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670110075 + 670110076.

It is an arithmetic number, because the mean of its divisors is an integer number (670110076).

Almost surely, 2^1340220151 is an apocalyptic number.

1340220151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340220151 is an equidigital number, since it uses as much as digits as its factorization.

1340220151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1340220151 is about 36609.0173454574. The cubic root of 1340220151 is about 1102.5341439404.

Adding to 1340220151 its reverse (1510220431), we get a palindrome (2850440582).

The spelling of 1340220151 in words is "one billion, three hundred forty million, two hundred twenty thousand, one hundred fifty-one".