31253141 has 2 divisors, whose sum is σ = 31253142. Its totient is φ = 31253140.

The previous prime is 31253083. The next prime is 31253143. The reversal of 31253141 is 14135213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31248100 + 5041 = 5590^2 + 71^2 .

It is an emirp because it is prime and its reverse (14135213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31253141 - 2⁶ = 31253077 is a prime.

Together with 31253143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31253143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15626570 + 15626571.

It is an arithmetic number, because the mean of its divisors is an integer number (15626571).

Almost surely, 2^31253141 is an apocalyptic number.

It is an amenable number.

31253141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31253141 is an equidigital number, since it uses as much as digits as its factorization.

31253141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 31253141 is about 5590.4508762711. The cubic root of 31253141 is about 314.9908152189.

Adding to 31253141 its reverse (14135213), we get a palindrome (45388354).

The spelling of 31253141 in words is "thirty-one million, two hundred fifty-three thousand, one hundred forty-one".