3155420311 has 4 divisors (see below), whose sum is σ = 3232381824. Its totient is φ = 3078458800.

The previous prime is 3155420309. The next prime is 3155420321. The reversal of 3155420311 is 1130245513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1130245513 = 20021 ⋅56453.

It is a cyclic number.

It is not a de Polignac number, because 3155420311 - 2¹ = 3155420309 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 (3155420321) 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 3 ways as a sum of consecutive naturals, for example, 38480695 + ... + 38480776.

It is an arithmetic number, because the mean of its divisors is an integer number (808095456).

Almost surely, 2^3155420311 is an apocalyptic number.

3155420311 is a deficient number, since it is larger than the sum of its proper divisors (76961513).

3155420311 is an equidigital number, since it uses as much as digits as its factorization.

3155420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76961512.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 3155420311 is about 56173.1280150928. The cubic root of 3155420311 is about 1466.7375332895.

Adding to 3155420311 its reverse (1130245513), we get a palindrome (4285665824).

The spelling of 3155420311 in words is "three billion, one hundred fifty-five million, four hundred twenty thousand, three hundred eleven".