620232137257131 has 64 divisors (see below), whose sum is σ = 1054144824944640. Its totient is φ = 353062909900800.

The previous prime is 620232137256967. The next prime is 620232137257133. The reversal of 620232137257131 is 131752731232026.

620232137257131 is a `hidden beast` number, since 6 + 2 + 0 + 2 + 3 + 2 + 1 + 3 + 72 + 571 + 3 + 1 = 666.

It is not a de Polignac number, because 620232137257131 - 2¹⁹ = 620232136732843 is a prime.

It is a super-2 number, since 2×620232137257131² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620232137257133) 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 63 ways as a sum of consecutive naturals, for example, 2803413891 + ... + 2803635123.

It is an arithmetic number, because the mean of its divisors is an integer number (16471012889760).

Almost surely, 2^{620232137257131} is an apocalyptic number.

620232137257131 is a deficient number, since it is larger than the sum of its proper divisors (433912687687509).

620232137257131 is a wasteful number, since it uses less digits than its factorization.

620232137257131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277913 (or 277907 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

Adding to 620232137257131 its reverse (131752731232026), we get a palindrome (751984868489157).

The spelling of 620232137257131 in words is "six hundred twenty trillion, two hundred thirty-two billion, one hundred thirty-seven million, two hundred fifty-seven thousand, one hundred thirty-one".