1345163431 has 4 divisors (see below), whose sum is σ = 1350745264. Its totient is φ = 1339581600.

The previous prime is 1345163419. The next prime is 1345163497. The reversal of 1345163431 is 1343615431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343615431 = 71 ⋅18924161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345163431 is a prime.

It is a super-2 number, since 2×1345163431² = 3618929312199383522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345163393 and 1345163402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345163401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790555 + ... + 2791036.

It is an arithmetic number, because the mean of its divisors is an integer number (337686316).

Almost surely, 2^1345163431 is an apocalyptic number.

1345163431 is a deficient number, since it is larger than the sum of its proper divisors (5581833).

1345163431 is an equidigital number, since it uses as much as digits as its factorization.

1345163431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581832.

The product of its digits is 12960, while the sum is 31.

The square root of 1345163431 is about 36676.4697183358. The cubic root of 1345163431 is about 1103.8880130294. Note that the first 3 decimals are identical.

Adding to 1345163431 its reverse (1343615431), we get a palindrome (2688778862).

The spelling of 1345163431 in words is "one billion, three hundred forty-five million, one hundred sixty-three thousand, four hundred thirty-one".