31204135245 has 16 divisors (see below), whose sum is σ = 49997855232. Its totient is φ = 16618459200.

The previous prime is 31204135241. The next prime is 31204135253. The reversal of 31204135245 is 54253140213.

It is not a de Polignac number, because 31204135245 - 2² = 31204135241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204135241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473277 + ... + 1494306.

It is an arithmetic number, because the mean of its divisors is an integer number (3124865952).

Almost surely, 2^31204135245 is an apocalyptic number.

It is an amenable number.

31204135245 is a deficient number, since it is larger than the sum of its proper divisors (18793719987).

31204135245 is a wasteful number, since it uses less digits than its factorization.

31204135245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968292.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 31204135245 its reverse (54253140213), we get a palindrome (85457275458).

The spelling of 31204135245 in words is "thirty-one billion, two hundred four million, one hundred thirty-five thousand, two hundred forty-five".