331147541021 has 4 divisors (see below), whose sum is σ = 361251862944. Its totient is φ = 301043219100.

The previous prime is 331147540963. The next prime is 331147541029. The reversal of 331147541021 is 120145741133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120145741133 = 11 ⋅10922340103.

It is a cyclic number.

It is not a de Polignac number, because 331147541021 - 2⁶ = 331147540957 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 (331147541029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15052160945 + ... + 15052160966.

It is an arithmetic number, because the mean of its divisors is an integer number (90312965736).

Almost surely, 2^331147541021 is an apocalyptic number.

It is an amenable number.

331147541021 is a deficient number, since it is larger than the sum of its proper divisors (30104321923).

331147541021 is a wasteful number, since it uses less digits than its factorization.

331147541021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30104321922.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 331147541021 in words is "three hundred thirty-one billion, one hundred forty-seven million, five hundred forty-one thousand, twenty-one".