234312409 has 2 divisors, whose sum is σ = 234312410. Its totient is φ = 234312408.

The previous prime is 234312367. The next prime is 234312413. The reversal of 234312409 is 904213432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135210384 + 99102025 = 11628^2 + 9955^2 .

It is a cyclic number.

It is not a de Polignac number, because 234312409 - 2¹⁵ = 234279641 is a prime.

It is a super-2 number, since 2×234312409² = 109804610022766562, which contains 22 as substring.

It is equal to p_12866230 and since 234312409 and 12866230 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (234312469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117156204 + 117156205.

It is an arithmetic number, because the mean of its divisors is an integer number (117156205).

Almost surely, 2^234312409 is an apocalyptic number.

It is an amenable number.

234312409 is a deficient number, since it is larger than the sum of its proper divisors (1).

234312409 is an equidigital number, since it uses as much as digits as its factorization.

234312409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 234312409 is about 15307.2665423974. The cubic root of 234312409 is about 616.4981291877.

The spelling of 234312409 in words is "two hundred thirty-four million, three hundred twelve thousand, four hundred nine".