245312133 has 24 divisors (see below), whose sum is σ = 363134688. Its totient is φ = 147180000.

The previous prime is 245312117. The next prime is 245312141. The reversal of 245312133 is 331213542.

It is not a de Polignac number, because 245312133 - 2⁴ = 245312117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245312153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33318 + ... + 40008.

It is an arithmetic number, because the mean of its divisors is an integer number (15130612).

Almost surely, 2^245312133 is an apocalyptic number.

It is an amenable number.

245312133 is a deficient number, since it is larger than the sum of its proper divisors (117822555).

245312133 is a wasteful number, since it uses less digits than its factorization.

245312133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6817 (or 6806 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 245312133 is about 15662.4433917572. The cubic root of 245312133 is about 625.9980920777.

Adding to 245312133 its reverse (331213542), we get a palindrome (576525675).

The spelling of 245312133 in words is "two hundred forty-five million, three hundred twelve thousand, one hundred thirty-three".