231133429 has 2 divisors, whose sum is σ = 231133430. Its totient is φ = 231133428.

The previous prime is 231133391. The next prime is 231133447. The reversal of 231133429 is 924331132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230341329 + 792100 = 15177^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 231133429 - 2⁹ = 231132917 is a prime.

It is a super-4 number, since 4×231133429⁴ (a number of 35 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231133397 and 231133406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231131429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115566714 + 115566715.

It is an arithmetic number, because the mean of its divisors is an integer number (115566715).

Almost surely, 2^231133429 is an apocalyptic number.

It is an amenable number.

231133429 is a deficient number, since it is larger than the sum of its proper divisors (1).

231133429 is an equidigital number, since it uses as much as digits as its factorization.

231133429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 231133429 is about 15203.0730117302. The cubic root of 231133429 is about 613.6973586950.

The spelling of 231133429 in words is "two hundred thirty-one million, one hundred thirty-three thousand, four hundred twenty-nine".