31134641 has 2 divisors, whose sum is σ = 31134642. Its totient is φ = 31134640.

The previous prime is 31134619. The next prime is 31134643. The reversal of 31134641 is 14643113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21893041 + 9241600 = 4679^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 31134641 - 2⁶ = 31134577 is a prime.

Together with 31134643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31134643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567320 + 15567321.

It is an arithmetic number, because the mean of its divisors is an integer number (15567321).

Almost surely, 2^31134641 is an apocalyptic number.

It is an amenable number.

31134641 is a deficient number, since it is larger than the sum of its proper divisors (1).

31134641 is an equidigital number, since it uses as much as digits as its factorization.

31134641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 31134641 is about 5579.8423812864. The cubic root of 31134641 is about 314.5922026221.

Adding to 31134641 its reverse (14643113), we get a palindrome (45777754).

The spelling of 31134641 in words is "thirty-one million, one hundred thirty-four thousand, six hundred forty-one".