31484143 has 2 divisors, whose sum is σ = 31484144. Its totient is φ = 31484142.

The previous prime is 31484129. The next prime is 31484161. The reversal of 31484143 is 34148413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31484143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31484543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15742071 + 15742072.

It is an arithmetic number, because the mean of its divisors is an integer number (15742072).

Almost surely, 2^31484143 is an apocalyptic number.

31484143 is a deficient number, since it is larger than the sum of its proper divisors (1).

31484143 is an equidigital number, since it uses as much as digits as its factorization.

31484143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 31484143 is about 5611.0732484971. The cubic root of 31484143 is about 315.7649770652.

The spelling of 31484143 in words is "thirty-one million, four hundred eighty-four thousand, one hundred forty-three".