2155241244331 has 8 divisors (see below), whose sum is σ = 2463345520640. Its totient is φ = 1847190135528.

The previous prime is 2155241244323. The next prime is 2155241244349. The reversal of 2155241244331 is 1334421425512.

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 2155241244331 - 2³ = 2155241244323 is a prime.

It is a super-2 number, since 2×2155241244331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155241241331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13204971 + ... + 13367188.

It is an arithmetic number, because the mean of its divisors is an integer number (307918190080).

Almost surely, 2^{2155241244331} is an apocalyptic number.

2155241244331 is a deficient number, since it is larger than the sum of its proper divisors (308104276309).

2155241244331 is a wasteful number, since it uses less digits than its factorization.

2155241244331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26583753.

The product of its digits is 115200, while the sum is 37.

Adding to 2155241244331 its reverse (1334421425512), we get a palindrome (3489662669843).

The spelling of 2155241244331 in words is "two trillion, one hundred fifty-five billion, two hundred forty-one million, two hundred forty-four thousand, three hundred thirty-one".