31443053 has 2 divisors, whose sum is σ = 31443054. Its totient is φ = 31443052.

The previous prime is 31443037. The next prime is 31443067. The reversal of 31443053 is 35034413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31214569 + 228484 = 5587^2 + 478^2 .

It is an emirp because it is prime and its reverse (35034413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31443053 - 2⁴ = 31443037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31443253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721526 + 15721527.

It is an arithmetic number, because the mean of its divisors is an integer number (15721527).

Almost surely, 2^31443053 is an apocalyptic number.

It is an amenable number.

31443053 is a deficient number, since it is larger than the sum of its proper divisors (1).

31443053 is an equidigital number, since it uses as much as digits as its factorization.

31443053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 31443053 is about 5607.4105432008. The cubic root of 31443053 is about 315.6275488210.

Adding to 31443053 its reverse (35034413), we get a palindrome (66477466).

The spelling of 31443053 in words is "thirty-one million, four hundred forty-three thousand, fifty-three".