1342331191 has 2 divisors, whose sum is σ = 1342331192. Its totient is φ = 1342331190.

The previous prime is 1342331189. The next prime is 1342331213. The reversal of 1342331191 is 1911332431.

It is a weak prime.

It is an emirp because it is prime and its reverse (1911332431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1342331191 - 2¹ = 1342331189 is a prime.

Together with 1342331189, 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 (1342331141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671165595 + 671165596.

It is an arithmetic number, because the mean of its divisors is an integer number (671165596).

Almost surely, 2^1342331191 is an apocalyptic number.

1342331191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342331191 is an equidigital number, since it uses as much as digits as its factorization.

1342331191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 1342331191 is about 36637.8382413592. The cubic root of 1342331191 is about 1103.1127236859.

It can be divided in two parts, 134233 and 1191, that added together give a square (135424 = 368²).

The spelling of 1342331191 in words is "one billion, three hundred forty-two million, three hundred thirty-one thousand, one hundred ninety-one".