620131 has 4 divisors (see below), whose sum is σ = 621712. Its totient is φ = 618552.

The previous prime is 620117. The next prime is 620159. The reversal of 620131 is 131026.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 620131 - 2⁵ = 620099 is a prime.

It is a super-2 number, since 2×620131² = 769124914322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301 + ... + 1153.

It is an arithmetic number, because the mean of its divisors is an integer number (155428).

2⁶²⁰¹³¹ is an apocalyptic number.

620131 is a deficient number, since it is larger than the sum of its proper divisors (1581).

620131 is an equidigital number, since it uses as much as digits as its factorization.

620131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 620131 is about 787.4839680908. The cubic root of 620131 is about 85.2761949985.

Adding to 620131 its reverse (131026), we get a palindrome (751157).

It can be divided in two parts, 6 and 20131, that multiplied together give a triangular number (120786 = T₄₉₁).

The spelling of 620131 in words is "six hundred twenty thousand, one hundred thirty-one".