31134401 has 2 divisors, whose sum is σ = 31134402. Its totient is φ = 31134400.

The previous prime is 31134391. The next prime is 31134403. The reversal of 31134401 is 10443113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27615025 + 3519376 = 5255^2 + 1876^2 .

It is an emirp because it is prime and its reverse (10443113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31134401 is a prime.

Together with 31134403, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31134401.

It is not a weakly prime, because it can be changed into another prime (31134403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567200 + 15567201.

It is an arithmetic number, because the mean of its divisors is an integer number (15567201).

Almost surely, 2^31134401 is an apocalyptic number.

It is an amenable number.

31134401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31134401 is an equidigital number, since it uses as much as digits as its factorization.

31134401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31134401 is about 5579.8208752611. The cubic root of 31134401 is about 314.5913942800.

Adding to 31134401 its reverse (10443113), we get a palindrome (41577514).

The spelling of 31134401 in words is "thirty-one million, one hundred thirty-four thousand, four hundred one".