331420544232551 has 8 divisors (see below), whose sum is σ = 344571195608304. Its totient is φ = 318511189212480.

The previous prime is 331420544232529. The next prime is 331420544232611. The reversal of 331420544232551 is 155232445024133.

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 331420544232551 - 2¹⁸ = 331420543970407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331420544202551) 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, 60324086120 + ... + 60324091613.

It is an arithmetic number, because the mean of its divisors is an integer number (43071399451038).

Almost surely, 2^{331420544232551} is an apocalyptic number.

331420544232551 is a deficient number, since it is larger than the sum of its proper divisors (13150651375753).

331420544232551 is a wasteful number, since it uses less digits than its factorization.

331420544232551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120648177841.

The product of its (nonzero) digits is 1728000, while the sum is 44.

Adding to 331420544232551 its reverse (155232445024133), we get a palindrome (486652989256684).

The spelling of 331420544232551 in words is "three hundred thirty-one trillion, four hundred twenty billion, five hundred forty-four million, two hundred thirty-two thousand, five hundred fifty-one".