331345621377 has 32 divisors (see below), whose sum is σ = 498001848960. Its totient is φ = 217712240640.

The previous prime is 331345621333. The next prime is 331345621471. The reversal of 331345621377 is 773126543133.

331345621377 is a `hidden beast` number, since 3 + 3 + 1 + 3 + 4 + 562 + 13 + 77 = 666.

It is not a de Polignac number, because 331345621377 - 2⁸ = 331345621121 is a prime.

It is a super-2 number, since 2×331345621377² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331345621307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368698 + ... + 893660.

It is an arithmetic number, because the mean of its divisors is an integer number (15562557780).

Almost surely, 2^331345621377 is an apocalyptic number.

It is an amenable number.

331345621377 is a deficient number, since it is larger than the sum of its proper divisors (166656227583).

331345621377 is a wasteful number, since it uses less digits than its factorization.

331345621377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525310 (or 525304 counting only the distinct ones).

The product of its digits is 952560, while the sum is 45.

The spelling of 331345621377 in words is "three hundred thirty-one billion, three hundred forty-five million, six hundred twenty-one thousand, three hundred seventy-seven".