31320434053 has 2 divisors, whose sum is σ = 31320434054. Its totient is φ = 31320434052.

The previous prime is 31320434009. The next prime is 31320434063. The reversal of 31320434053 is 35043402313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30633050529 + 687383524 = 175023^2 + 26218^2 .

It is an emirp because it is prime and its reverse (35043402313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31320434053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31320434063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660217026 + 15660217027.

It is an arithmetic number, because the mean of its divisors is an integer number (15660217027).

Almost surely, 2^31320434053 is an apocalyptic number.

It is an amenable number.

31320434053 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320434053 is an equidigital number, since it uses as much as digits as its factorization.

31320434053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 31320434053 its reverse (35043402313), we get a palindrome (66363836366).

The spelling of 31320434053 in words is "thirty-one billion, three hundred twenty million, four hundred thirty-four thousand, fifty-three".