231064819 has 2 divisors, whose sum is σ = 231064820. Its totient is φ = 231064818.

The previous prime is 231064759. The next prime is 231064861. The reversal of 231064819 is 918460132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231064819 - 2¹⁵ = 231032051 is a prime.

It is a super-2 number, since 2×231064819² = 106781901159005522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231061819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115532409 + 115532410.

It is an arithmetic number, because the mean of its divisors is an integer number (115532410).

Almost surely, 2^231064819 is an apocalyptic number.

231064819 is a deficient number, since it is larger than the sum of its proper divisors (1).

231064819 is an equidigital number, since it uses as much as digits as its factorization.

231064819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 231064819 is about 15200.8163925494. The cubic root of 231064819 is about 613.6366290652.

The spelling of 231064819 in words is "two hundred thirty-one million, sixty-four thousand, eight hundred nineteen".