1233013985 has 8 divisors (see below), whose sum is σ = 1690990656. Its totient is φ = 845495280.

The previous prime is 1233013981. The next prime is 1233013997. The reversal of 1233013985 is 5893103321.

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 1233013985 - 2² = 1233013981 is a prime.

It is a super-3 number, since 3×1233013985³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 35228971 = 1233013985 / (1 + 2 + 3 + 3 + 0 + 1 + 3 + 9 + 8 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233013981) 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, 17614451 + ... + 17614520.

It is an arithmetic number, because the mean of its divisors is an integer number (211373832).

Almost surely, 2^1233013985 is an apocalyptic number.

It is an amenable number.

1233013985 is a deficient number, since it is larger than the sum of its proper divisors (457976671).

1233013985 is an equidigital number, since it uses as much as digits as its factorization.

1233013985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35228983.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1233013985 is about 35114.2988681249. The cubic root of 1233013985 is about 1072.3157070370.

The spelling of 1233013985 in words is "one billion, two hundred thirty-three million, thirteen thousand, nine hundred eighty-five".