331991890013951 has 8 divisors (see below), whose sum is σ = 351522471553344. Its totient is φ = 312461491456000.

The previous prime is 331991890013909. The next prime is 331991890013977. The reversal of 331991890013951 is 159310098199133.

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 331991890013951 - 2⁶ = 331991890013887 is a prime.

It is a super-2 number, since 2×331991890013951² (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 (331991890013051) 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, 42001175 + ... + 49275576.

It is an arithmetic number, because the mean of its divisors is an integer number (43940308944168).

Almost surely, 2^{331991890013951} is an apocalyptic number.

331991890013951 is a deficient number, since it is larger than the sum of its proper divisors (19530581539393).

331991890013951 is a wasteful number, since it uses less digits than its factorization.

331991890013951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91490721.

The product of its (nonzero) digits is 7085880, while the sum is 62.

The spelling of 331991890013951 in words is "three hundred thirty-one trillion, nine hundred ninety-one billion, eight hundred ninety million, thirteen thousand, nine hundred fifty-one".