3123456145 has 8 divisors (see below), whose sum is σ = 3835313856. Its totient is φ = 2440653936.

The previous prime is 3123456131. The next prime is 3123456179. The reversal of 3123456145 is 5416543213.

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 3123456145 - 2⁹ = 3123455633 is a prime.

It is a super-2 number, since 2×3123456145² = 19511956579476522050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3123456145.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7263637 + ... + 7264066.

It is an arithmetic number, because the mean of its divisors is an integer number (479414232).

Almost surely, 2^3123456145 is an apocalyptic number.

It is an amenable number.

3123456145 is a deficient number, since it is larger than the sum of its proper divisors (711857711).

3123456145 is a wasteful number, since it uses less digits than its factorization.

3123456145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14527751.

The product of its digits is 43200, while the sum is 34.

The square root of 3123456145 is about 55887.8890726783. The cubic root of 3123456145 is about 1461.7680689460.

Adding to 3123456145 its reverse (5416543213), we get a palindrome (8539999358).

The spelling of 3123456145 in words is "three billion, one hundred twenty-three million, four hundred fifty-six thousand, one hundred forty-five".