31201131253 has 2 divisors, whose sum is σ = 31201131254. Its totient is φ = 31201131252.

The previous prime is 31201131223. The next prime is 31201131289. The reversal of 31201131253 is 35213110213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27495609124 + 3705522129 = 165818^2 + 60873^2 .

It is a cyclic number.

It is not a de Polignac number, because 31201131253 - 2¹³ = 31201123061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31201131223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600565626 + 15600565627.

It is an arithmetic number, because the mean of its divisors is an integer number (15600565627).

Almost surely, 2^31201131253 is an apocalyptic number.

It is an amenable number.

31201131253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31201131253 is an equidigital number, since it uses as much as digits as its factorization.

31201131253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 31201131253 its reverse (35213110213), we get a palindrome (66414241466).

The spelling of 31201131253 in words is "thirty-one billion, two hundred one million, one hundred thirty-one thousand, two hundred fifty-three".