1345405351 has 4 divisors (see below), whose sum is σ = 1346450400.
Its totient is φ = 1344360304.
The previous prime is 1345405291. The next prime is 1345405387. The reversal of 1345405351 is 1535045431.
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 1345405351 - 27 = 1345405223 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 (1345405151) 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, 520591 + ... + 523168.
It is an arithmetic number, because the mean of its divisors is an integer number (336612600).
Almost surely, 21345405351 is an apocalyptic number.
1345405351 is a deficient number, since it is larger than the sum of its proper divisors (1045049).
1345405351 is a wasteful number, since it uses less digits than its factorization.
1345405351 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1045048.
The product of its (nonzero) digits is 18000, while the sum is 31.
The square root of 1345405351 is about 36679.7675974099.
The cubic root of 1345405351 is about 1103.9541850583.
The spelling of 1345405351 in words is "one billion, three hundred forty-five million, four hundred five thousand, three hundred fifty-one".