31140204713 has 2 divisors, whose sum is σ = 31140204714. Its totient is φ = 31140204712.

The previous prime is 31140204707. The next prime is 31140204737. The reversal of 31140204713 is 31740204113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24865505344 + 6274699369 = 157688^2 + 79213^2 .

It is a cyclic number.

It is not a de Polignac number, because 31140204713 - 2⁶ = 31140204649 is a prime.

It is not a weakly prime, because it can be changed into another prime (31140204773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15570102356 + 15570102357.

It is an arithmetic number, because the mean of its divisors is an integer number (15570102357).

Almost surely, 2^31140204713 is an apocalyptic number.

It is an amenable number.

31140204713 is a deficient number, since it is larger than the sum of its proper divisors (1).

31140204713 is an equidigital number, since it uses as much as digits as its factorization.

31140204713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 31140204713 its reverse (31740204113), we get a palindrome (62880408826).

The spelling of 31140204713 in words is "thirty-one billion, one hundred forty million, two hundred four thousand, seven hundred thirteen".