331143101 has 8 divisors (see below), whose sum is σ = 343035000. Its totient is φ = 319432960.

The previous prime is 331143097. The next prime is 331143133. The reversal of 331143101 is 101341133.

It can be written as a sum of positive squares in 4 ways, for example, as 3496900 + 327646201 = 1870^2 + 18101^2 .

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 331143101 - 2² = 331143097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331143101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331143601) 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, 41726 + ... + 49023.

It is an arithmetic number, because the mean of its divisors is an integer number (42879375).

Almost surely, 2^331143101 is an apocalyptic number.

It is an amenable number.

331143101 is a deficient number, since it is larger than the sum of its proper divisors (11891899).

331143101 is an equidigital number, since it uses as much as digits as its factorization.

331143101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90879.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 331143101 is about 18197.3377448461. The cubic root of 331143101 is about 691.8393137381.

Adding to 331143101 its reverse (101341133), we get a palindrome (432484234).

The spelling of 331143101 in words is "three hundred thirty-one million, one hundred forty-three thousand, one hundred one".