31245204043 has 16 divisors (see below), whose sum is σ = 33676984224. Its totient is φ = 28882022400.

The previous prime is 31245204007. The next prime is 31245204091. The reversal of 31245204043 is 34040254213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31245204043 - 2⁹ = 31245203531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31245204343) 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, 343143 + ... + 424543.

It is an arithmetic number, because the mean of its divisors is an integer number (2104811514).

Almost surely, 2^31245204043 is an apocalyptic number.

31245204043 is a deficient number, since it is larger than the sum of its proper divisors (2431780181).

31245204043 is a wasteful number, since it uses less digits than its factorization.

31245204043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81822.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 31245204043 its reverse (34040254213), we get a palindrome (65285458256).

The spelling of 31245204043 in words is "thirty-one billion, two hundred forty-five million, two hundred four thousand, forty-three".