620352031 has 4 divisors (see below), whose sum is σ = 668071432. Its totient is φ = 572632632.

The previous prime is 620352023. The next prime is 620352077. The reversal of 620352031 is 130253026.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 620352031 - 2³ = 620352023 is a prime.

It is a super-2 number, since 2×620352031² = 769673284731649922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620351993 and 620352011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620352001) 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, 23859681 + ... + 23859706.

It is an arithmetic number, because the mean of its divisors is an integer number (167017858).

Almost surely, 2^620352031 is an apocalyptic number.

620352031 is a deficient number, since it is larger than the sum of its proper divisors (47719401).

620352031 is a wasteful number, since it uses less digits than its factorization.

620352031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47719400.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 620352031 is about 24906.8671454280. The cubic root of 620352031 is about 852.8632535470.

The spelling of 620352031 in words is "six hundred twenty million, three hundred fifty-two thousand, thirty-one".