1968331 has 2 divisors, whose sum is σ = 1968332. Its totient is φ = 1968330.

The previous prime is 1968301. The next prime is 1968341. The reversal of 1968331 is 1338691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1968331 - 2⁷ = 1968203 is a prime.

It is a super-2 number, since 2×1968331² = 7748653851122, which contains 22 as substring.

1968331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1968293 and 1968302.

It is not a weakly prime, because it can be changed into another prime (1968301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984165 + 984166.

It is an arithmetic number, because the mean of its divisors is an integer number (984166).

2^1968331 is an apocalyptic number.

1968331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968331 is an equidigital number, since it uses as much as digits as its factorization.

1968331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 1968331 is about 1402.9722021480. The cubic root of 1968331 is about 125.3235564339.

The spelling of 1968331 in words is "one million, nine hundred sixty-eight thousand, three hundred thirty-one".