3120520451 has 4 divisors (see below), whose sum is σ = 3121188672. Its totient is φ = 3119852232.

The previous prime is 3120520439. The next prime is 3120520519. The reversal of 3120520451 is 1540250213.

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 3120520451 - 2¹⁴ = 3120504067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3120525451) 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, 327056 + ... + 336461.

It is an arithmetic number, because the mean of its divisors is an integer number (780297168).

Almost surely, 2^3120520451 is an apocalyptic number.

3120520451 is a deficient number, since it is larger than the sum of its proper divisors (668221).

3120520451 is an equidigital number, since it uses as much as digits as its factorization.

3120520451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668220.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 3120520451 is about 55861.6187645865. The cubic root of 3120520451 is about 1461.3099600757.

Adding to 3120520451 its reverse (1540250213), we get a palindrome (4660770664).

The spelling of 3120520451 in words is "three billion, one hundred twenty million, five hundred twenty thousand, four hundred fifty-one".