1345420245431 has 4 divisors (see below), whose sum is σ = 1376709088392. Its totient is φ = 1314131402472.

The previous prime is 1345420245427. The next prime is 1345420245437.

1345420245431 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 1345420245431 - 2² = 1345420245427 is a prime.

It is a super-2 number, since 2×1345420245431² (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 (1345420245437) 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, 15644421416 + ... + 15644421501.

It is an arithmetic number, because the mean of its divisors is an integer number (344177272098).

Almost surely, 2^{1345420245431} is an apocalyptic number.

1345420245431 is a deficient number, since it is larger than the sum of its proper divisors (31288842961).

1345420245431 is an equidigital number, since it uses as much as digits as its factorization.

1345420245431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31288842960.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 1345420245431 in words is "one trillion, three hundred forty-five billion, four hundred twenty million, two hundred forty-five thousand, four hundred thirty-one".