256154102331 has 16 divisors (see below), whose sum is σ = 345189738240. Its totient is φ = 168946575200.

The previous prime is 256154102317. The next prime is 256154102333. The reversal of 256154102331 is 133201451652.

It is a cyclic number.

It is not a de Polignac number, because 256154102331 - 2⁵ = 256154102299 is a prime.

It is a super-2 number, since 2×256154102331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256154102292 and 256154102301.

It is not an unprimeable number, because it can be changed into a prime (256154102333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59290 + ... + 718208.

It is an arithmetic number, because the mean of its divisors is an integer number (21574358640).

Almost surely, 2^256154102331 is an apocalyptic number.

256154102331 is a deficient number, since it is larger than the sum of its proper divisors (89035635909).

256154102331 is a wasteful number, since it uses less digits than its factorization.

256154102331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660306.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 256154102331 its reverse (133201451652), we get a palindrome (389355553983).

The spelling of 256154102331 in words is "two hundred fifty-six billion, one hundred fifty-four million, one hundred two thousand, three hundred thirty-one".