1235233897 has 4 divisors (see below), whose sum is σ = 1235583376. Its totient is φ = 1234884420.

The previous prime is 1235233891. The next prime is 1235233903. The reversal of 1235233897 is 7983325321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1235233891) and next prime (1235233903).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235233897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235233891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169383 + ... + 176524.

It is an arithmetic number, because the mean of its divisors is an integer number (308895844).

Almost surely, 2^1235233897 is an apocalyptic number.

It is an amenable number.

1235233897 is a deficient number, since it is larger than the sum of its proper divisors (349479).

1235233897 is an equidigital number, since it uses as much as digits as its factorization.

1235233897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349478.

The product of its digits is 272160, while the sum is 43.

The square root of 1235233897 is about 35145.8944544025. The cubic root of 1235233897 is about 1072.9588517704.

The spelling of 1235233897 in words is "one billion, two hundred thirty-five million, two hundred thirty-three thousand, eight hundred ninety-seven".