155123030251331 has 8 divisors (see below), whose sum is σ = 155647187328960. Its totient is φ = 154599741704232.

The previous prime is 155123030251247. The next prime is 155123030251333. The reversal of 155123030251331 is 133152030321551.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155123030251331 is a prime.

It is a super-2 number, since 2×155123030251331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155123030251291 and 155123030251300.

It is not an unprimeable number, because it can be changed into a prime (155123030251333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216774821 + ... + 217489238.

It is an arithmetic number, because the mean of its divisors is an integer number (19455898416120).

Almost surely, 2^{155123030251331} is an apocalyptic number.

155123030251331 is a deficient number, since it is larger than the sum of its proper divisors (524157077629).

155123030251331 is an equidigital number, since it uses as much as digits as its factorization.

155123030251331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434265265.

The product of its (nonzero) digits is 40500, while the sum is 35.

Adding to 155123030251331 its reverse (133152030321551), we get a palindrome (288275060572882).

The spelling of 155123030251331 in words is "one hundred fifty-five trillion, one hundred twenty-three billion, thirty million, two hundred fifty-one thousand, three hundred thirty-one".