1345670765431 has 4 divisors (see below), whose sum is σ = 1354702113000. Its totient is φ = 1336639417864.

The previous prime is 1345670765393. The next prime is 1345670765437.

1345670765431 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1345670765431 - 2⁷ = 1345670765303 is a prime.

It is a super-2 number, since 2×1345670765431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345670765437) 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, 4515673561 + ... + 4515673858.

It is an arithmetic number, because the mean of its divisors is an integer number (338675528250).

Almost surely, 2^{1345670765431} is an apocalyptic number.

1345670765431 is a deficient number, since it is larger than the sum of its proper divisors (9031347569).

1345670765431 is an equidigital number, since it uses as much as digits as its factorization.

1345670765431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031347568.

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 1345670765431 in words is "one trillion, three hundred forty-five billion, six hundred seventy million, seven hundred sixty-five thousand, four hundred thirty-one".