1345504351 has 4 divisors (see below), whose sum is σ = 1346136112. Its totient is φ = 1344872592.

The previous prime is 1345504337. The next prime is 1345504397. The reversal of 1345504351 is 1534055431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1534055431 = 3677 ⋅417203.

It is a cyclic number.

It is not a de Polignac number, because 1345504351 - 2⁵ = 1345504319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345504651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312675 + ... + 316948.

It is an arithmetic number, because the mean of its divisors is an integer number (336534028).

Almost surely, 2^1345504351 is an apocalyptic number.

1345504351 is a deficient number, since it is larger than the sum of its proper divisors (631761).

1345504351 is an equidigital number, since it uses as much as digits as its factorization.

1345504351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631760.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 1345504351 is about 36681.1170904050. The cubic root of 1345504351 is about 1103.9812620984.

Adding to 1345504351 its reverse (1534055431), we get a palindrome (2879559782).

The spelling of 1345504351 in words is "one billion, three hundred forty-five million, five hundred four thousand, three hundred fifty-one".