620331231501 has 12 divisors (see below), whose sum is σ = 901968003040. Its totient is φ = 410815384200.

The previous prime is 620331231479. The next prime is 620331231563. The reversal of 620331231501 is 105132133026.

620331231501 is a `hidden beast` number, since 6 + 2 + 0 + 33 + 123 + 1 + 501 = 666.

620331231501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 620331231501 - 2⁵ = 620331231469 is a prime.

It is a super-3 number, since 3×620331231501³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620331231601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228229411 + ... + 228232128.

Almost surely, 2^620331231501 is an apocalyptic number.

It is an amenable number.

620331231501 is a deficient number, since it is larger than the sum of its proper divisors (281636771539).

620331231501 is a wasteful number, since it uses less digits than its factorization.

620331231501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456461696 (or 456461693 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 620331231501 its reverse (105132133026), we get a palindrome (725463364527).

The spelling of 620331231501 in words is "six hundred twenty billion, three hundred thirty-one million, two hundred thirty-one thousand, five hundred one".