1345232391 has 8 divisors (see below), whose sum is σ = 1824044160. Its totient is φ = 881621112.

The previous prime is 1345232353. The next prime is 1345232411. The reversal of 1345232391 is 1932325431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1345232391 - 2²⁶ = 1278123527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345233391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3799915 + ... + 3800268.

It is an arithmetic number, because the mean of its divisors is an integer number (228005520).

Almost surely, 2^1345232391 is an apocalyptic number.

1345232391 is a deficient number, since it is larger than the sum of its proper divisors (478811769).

1345232391 is an equidigital number, since it uses as much as digits as its factorization.

1345232391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600245.

The product of its digits is 19440, while the sum is 33.

The square root of 1345232391 is about 36677.4098185791. The cubic root of 1345232391 is about 1103.9068763672.

The spelling of 1345232391 in words is "one billion, three hundred forty-five million, two hundred thirty-two thousand, three hundred ninety-one".