231122819 has 2 divisors, whose sum is σ = 231122820. Its totient is φ = 231122818.

The previous prime is 231122813. The next prime is 231122851. The reversal of 231122819 is 918221132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231122819 - 2¹⁶ = 231057283 is a prime.

It is a super-2 number, since 2×231122819² = 106835514925013522, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_12700955 and since 231122819 and 12700955 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 231122791 and 231122800.

It is not a weakly prime, because it can be changed into another prime (231122813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115561409 + 115561410.

It is an arithmetic number, because the mean of its divisors is an integer number (115561410).

Almost surely, 2^231122819 is an apocalyptic number.

231122819 is a deficient number, since it is larger than the sum of its proper divisors (1).

231122819 is an equidigital number, since it uses as much as digits as its factorization.

231122819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 231122819 is about 15202.7240651141. The cubic root of 231122819 is about 613.6879681182.

The spelling of 231122819 in words is "two hundred thirty-one million, one hundred twenty-two thousand, eight hundred nineteen".