220378331 has 2 divisors, whose sum is σ = 220378332. Its totient is φ = 220378330.

The previous prime is 220378307. The next prime is 220378409. The reversal of 220378331 is 133873022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220378331 is a prime.

It is a super-2 number, since 2×220378331² = 97133217548691122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 220378294 and 220378303.

It is not a weakly prime, because it can be changed into another prime (220378831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110189165 + 110189166.

It is an arithmetic number, because the mean of its divisors is an integer number (110189166).

Almost surely, 2^220378331 is an apocalyptic number.

220378331 is a deficient number, since it is larger than the sum of its proper divisors (1).

220378331 is an equidigital number, since it uses as much as digits as its factorization.

220378331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 220378331 is about 14845.1450312888. The cubic root of 220378331 is about 604.0269228749.

The spelling of 220378331 in words is "two hundred twenty million, three hundred seventy-eight thousand, three hundred thirty-one".