1345613431 has 8 divisors (see below), whose sum is σ = 1375248384. Its totient is φ = 1316020440.

The previous prime is 1345613429. The next prime is 1345613473. The reversal of 1345613431 is 1343165431.

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

It is a cyclic number.

It is not a de Polignac number, because 1345613431 - 2¹ = 1345613429 is a prime.

It is a super-2 number, since 2×1345613431² = 3621351011375183522, 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 = 1345613393 and 1345613402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345616431) 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, 59406 + ... + 78868.

It is an arithmetic number, because the mean of its divisors is an integer number (171906048).

Almost surely, 2^1345613431 is an apocalyptic number.

1345613431 is a deficient number, since it is larger than the sum of its proper divisors (29634953).

1345613431 is a wasteful number, since it uses less digits than its factorization.

1345613431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20981.

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

The square root of 1345613431 is about 36682.6039288380. The cubic root of 1345613431 is about 1104.0110945356.

Adding to 1345613431 its reverse (1343165431), we get a palindrome (2688778862).

The spelling of 1345613431 in words is "one billion, three hundred forty-five million, six hundred thirteen thousand, four hundred thirty-one".