31434761 has 2 divisors, whose sum is σ = 31434762. Its totient is φ = 31434760.

The previous prime is 31434757. The next prime is 31434803. The reversal of 31434761 is 16743413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26327161 + 5107600 = 5131^2 + 2260^2 .

It is an emirp because it is prime and its reverse (16743413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31434761 - 2² = 31434757 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31434731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717380 + 15717381.

It is an arithmetic number, because the mean of its divisors is an integer number (15717381).

Almost surely, 2^31434761 is an apocalyptic number.

It is an amenable number.

31434761 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434761 is an equidigital number, since it uses as much as digits as its factorization.

31434761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 31434761 is about 5606.6711157335. The cubic root of 31434761 is about 315.5998011579.

The spelling of 31434761 in words is "thirty-one million, four hundred thirty-four thousand, seven hundred sixty-one".