3120751445 has 54 divisors (see below), whose sum is σ = 4514362038. Its totient is φ = 2064994848.

The previous prime is 3120751441. The next prime is 3120751471. The reversal of 3120751445 is 5441570213.

It can be written as a sum of positive squares in only one way, i.e., 2496601156 + 624150289 = 49966^2 + 24983^2 .

It is not a de Polignac number, because 3120751445 - 2² = 3120751441 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 (3120751441) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 37599374 + ... + 37599456.

It is an arithmetic number, because the mean of its divisors is an integer number (83599297).

Almost surely, 2^3120751445 is an apocalyptic number.

3120751445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3120751445 is a deficient number, since it is larger than the sum of its proper divisors (1393610593).

3120751445 is an frugal number, since it uses more digits than its factorization.

3120751445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 3120751445 is about 55863.6862818772. The cubic root of 3120751445 is about 1461.3460166150.

The spelling of 3120751445 in words is "three billion, one hundred twenty million, seven hundred fifty-one thousand, four hundred forty-five".