331143029 has 12 divisors (see below), whose sum is σ = 401956704. Its totient is φ = 271495224.

The previous prime is 331142971. The next prime is 331143047. The reversal of 331143029 is 920341133.

It is a happy number.

It is not a de Polignac number, because 331143029 - 2¹⁶ = 331077493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331142989 and 331143007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331143049) 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 11 ways as a sum of consecutive naturals, for example, 145787 + ... + 148040.

It is an arithmetic number, because the mean of its divisors is an integer number (33496392).

Almost surely, 2^331143029 is an apocalyptic number.

It is an amenable number.

331143029 is a deficient number, since it is larger than the sum of its proper divisors (70813675).

331143029 is a wasteful number, since it uses less digits than its factorization.

331143029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293864 (or 293857 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 331143029 is about 18197.3357665346. The cubic root of 331143029 is about 691.8392635962.

The spelling of 331143029 in words is "three hundred thirty-one million, one hundred forty-three thousand, twenty-nine".