331145533077 has 16 divisors (see below), whose sum is σ = 442797505920. Its totient is φ = 220129227072.

The previous prime is 331145533049. The next prime is 331145533091. The reversal of 331145533077 is 770335541133.

It is not a de Polignac number, because 331145533077 - 2⁶ = 331145533013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331145533097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2155423 + ... + 2303939.

It is an arithmetic number, because the mean of its divisors is an integer number (27674844120).

Almost surely, 2^331145533077 is an apocalyptic number.

It is an amenable number.

331145533077 is a deficient number, since it is larger than the sum of its proper divisors (111651972843).

331145533077 is a wasteful number, since it uses less digits than its factorization.

331145533077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150652.

The product of its (nonzero) digits is 396900, while the sum is 42.

The spelling of 331145533077 in words is "three hundred thirty-one billion, one hundred forty-five million, five hundred thirty-three thousand, seventy-seven".