331928101 has 2 divisors, whose sum is σ = 331928102. Its totient is φ = 331928100.

The previous prime is 331928057. The next prime is 331928131. The reversal of 331928101 is 101829133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324360100 + 7568001 = 18010^2 + 2751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331928101 is a prime.

It is a super-2 number, since 2×331928101² = 220352528466932402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331928101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331928131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165964050 + 165964051.

It is an arithmetic number, because the mean of its divisors is an integer number (165964051).

Almost surely, 2^331928101 is an apocalyptic number.

It is an amenable number.

331928101 is a deficient number, since it is larger than the sum of its proper divisors (1).

331928101 is an equidigital number, since it uses as much as digits as its factorization.

331928101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 331928101 is about 18218.8940663258. The cubic root of 331928101 is about 692.3855682883.

The spelling of 331928101 in words is "three hundred thirty-one million, nine hundred twenty-eight thousand, one hundred one".