256724033550031 has 8 divisors (see below), whose sum is σ = 256888274229440. Its totient is φ = 256559798694528.

The previous prime is 256724033550013. The next prime is 256724033550037. The reversal of 256724033550031 is 130055330427652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256724033550031 - 2¹³ = 256724033541839 is a prime.

It is a super-2 number, since 2×256724033550031² (a number of 30 digits) contains 22 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 (256724033550037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88511050 + ... + 91365496.

It is an arithmetic number, because the mean of its divisors is an integer number (32111034278680).

Almost surely, 2^{256724033550031} is an apocalyptic number.

256724033550031 is a deficient number, since it is larger than the sum of its proper divisors (164240679409).

256724033550031 is a wasteful number, since it uses less digits than its factorization.

256724033550031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911953.

The product of its (nonzero) digits is 2268000, while the sum is 46.

Adding to 256724033550031 its reverse (130055330427652), we get a palindrome (386779363977683).

The spelling of 256724033550031 in words is "two hundred fifty-six trillion, seven hundred twenty-four billion, thirty-three million, five hundred fifty thousand, thirty-one".