31400063 has 2 divisors, whose sum is σ = 31400064. Its totient is φ = 31400062.

The previous prime is 31400053. The next prime is 31400077. The reversal of 31400063 is 36000413.

It is a weak prime.

It is an emirp because it is prime and its reverse (36000413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31400063 - 2⁶ = 31399999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31400023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700031 + 15700032.

It is an arithmetic number, because the mean of its divisors is an integer number (15700032).

Almost surely, 2^31400063 is an apocalyptic number.

31400063 is a deficient number, since it is larger than the sum of its proper divisors (1).

31400063 is an equidigital number, since it uses as much as digits as its factorization.

31400063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 31400063 is about 5603.5759118620. The cubic root of 31400063 is about 315.4836376796.

Adding to 31400063 its reverse (36000413), we get a palindrome (67400476).

The spelling of 31400063 in words is "thirty-one million, four hundred thousand, sixty-three".