1235213105 has 8 divisors (see below), whose sum is σ = 1694006592. Its totient is φ = 847003248.

The previous prime is 1235213101. The next prime is 1235213113. The reversal of 1235213105 is 5013125321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1235213105 - 2² = 1235213101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1235213101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17645867 + ... + 17645936.

It is an arithmetic number, because the mean of its divisors is an integer number (211750824).

Almost surely, 2^1235213105 is an apocalyptic number.

It is an amenable number.

1235213105 is a deficient number, since it is larger than the sum of its proper divisors (458793487).

1235213105 is an equidigital number, since it uses as much as digits as its factorization.

1235213105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35291815.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1235213105 is about 35145.5986575844. The cubic root of 1235213105 is about 1072.9528315649.

Adding to 1235213105 its reverse (5013125321), we get a palindrome (6248338426).

The spelling of 1235213105 in words is "one billion, two hundred thirty-five million, two hundred thirteen thousand, one hundred five".