31434149 has 2 divisors, whose sum is σ = 31434150. Its totient is φ = 31434148.

The previous prime is 31434107. The next prime is 31434163. The reversal of 31434149 is 94143413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 5373124 = 5105^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 31434149 - 2¹² = 31430053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31434199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717074 + 15717075.

It is an arithmetic number, because the mean of its divisors is an integer number (15717075).

Almost surely, 2^31434149 is an apocalyptic number.

It is an amenable number.

31434149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434149 is an equidigital number, since it uses as much as digits as its factorization.

31434149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 31434149 is about 5606.6165376277. The cubic root of 31434149 is about 315.5977530183.

The spelling of 31434149 in words is "thirty-one million, four hundred thirty-four thousand, one hundred forty-nine".