31434929 has 2 divisors, whose sum is σ = 31434930. Its totient is φ = 31434928.

The previous prime is 31434919. The next prime is 31434973. The reversal of 31434929 is 92943413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17447329 + 13987600 = 4177^2 + 3740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31434929 is a prime.

It is a super-2 number, since 2×31434929² = 1976309522470082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31434919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717464 + 15717465.

It is an arithmetic number, because the mean of its divisors is an integer number (15717465).

Almost surely, 2^31434929 is an apocalyptic number.

It is an amenable number.

31434929 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434929 is an equidigital number, since it uses as much as digits as its factorization.

31434929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 31434929 is about 5606.6860978657. The cubic root of 31434929 is about 315.6003633876.

The spelling of 31434929 in words is "thirty-one million, four hundred thirty-four thousand, nine hundred twenty-nine".