620357231 has 16 divisors (see below), whose sum is σ = 676486944. Its totient is φ = 565469184.

The previous prime is 620357197. The next prime is 620357249. The reversal of 620357231 is 132753026.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620357231 is a prime.

It is a super-2 number, since 2×620357231² = 769686188107974722, 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 = 620357194 and 620357203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620357261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509135 + ... + 510351.

It is an arithmetic number, because the mean of its divisors is an integer number (42280434).

Almost surely, 2^620357231 is an apocalyptic number.

620357231 is a deficient number, since it is larger than the sum of its proper divisors (56129713).

620357231 is a wasteful number, since it uses less digits than its factorization.

620357231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 620357231 is about 24906.9715340906. The cubic root of 620357231 is about 852.8656365362.

The spelling of 620357231 in words is "six hundred twenty million, three hundred fifty-seven thousand, two hundred thirty-one".