3121045045 has 16 divisors (see below), whose sum is σ = 3968792640. Its totient is φ = 2348049664.

The previous prime is 3121045043. The next prime is 3121045093. The reversal of 3121045045 is 5405401213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3121045045 - 2¹ = 3121045043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121045043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94746 + ... + 123364.

It is an arithmetic number, because the mean of its divisors is an integer number (248049540).

Almost surely, 2^3121045045 is an apocalyptic number.

It is an amenable number.

3121045045 is a deficient number, since it is larger than the sum of its proper divisors (847747595).

3121045045 is a wasteful number, since it uses less digits than its factorization.

3121045045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29924.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 3121045045 is about 55866.3140452276. The cubic root of 3121045045 is about 1461.3918429428.

Adding to 3121045045 its reverse (5405401213), we get a palindrome (8526446258).

The spelling of 3121045045 in words is "three billion, one hundred twenty-one million, forty-five thousand, forty-five".