31046429 has 2 divisors, whose sum is σ = 31046430. Its totient is φ = 31046428.

The previous prime is 31046423. The next prime is 31046459. The reversal of 31046429 is 92464013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 3724900 = 5227^2 + 1930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31046429 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31046423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15523214 + 15523215.

It is an arithmetic number, because the mean of its divisors is an integer number (15523215).

Almost surely, 2^31046429 is an apocalyptic number.

It is an amenable number.

31046429 is a deficient number, since it is larger than the sum of its proper divisors (1).

31046429 is an equidigital number, since it uses as much as digits as its factorization.

31046429 is an evil number, because the sum of its binary digits is even.

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

The square root of 31046429 is about 5571.9322501265. The cubic root of 31046429 is about 314.2948162161.

The spelling of 31046429 in words is "thirty-one million, forty-six thousand, four hundred twenty-nine".