231214429 has 2 divisors, whose sum is σ = 231214430. Its totient is φ = 231214428.

The previous prime is 231214421. The next prime is 231214471. The reversal of 231214429 is 924412132.

231214429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230979204 + 235225 = 15198^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 231214429 - 2³ = 231214421 is a prime.

It is a super-2 number, since 2×231214429² = 106920224355592082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231214397 and 231214406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231214421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115607214 + 115607215.

It is an arithmetic number, because the mean of its divisors is an integer number (115607215).

Almost surely, 2^231214429 is an apocalyptic number.

It is an amenable number.

231214429 is a deficient number, since it is larger than the sum of its proper divisors (1).

231214429 is an equidigital number, since it uses as much as digits as its factorization.

231214429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 231214429 is about 15205.7367134907. The cubic root of 231214429 is about 613.7690397734.

The spelling of 231214429 in words is "two hundred thirty-one million, two hundred fourteen thousand, four hundred twenty-nine".