31929049 has 2 divisors, whose sum is σ = 31929050. Its totient is φ = 31929048.

The previous prime is 31929041. The next prime is 31929067. The reversal of 31929049 is 94092913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21483225 + 10445824 = 4635^2 + 3232^2 .

It is a cyclic number.

It is not a de Polignac number, because 31929049 - 2³ = 31929041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31928999 and 31929017.

It is not a weakly prime, because it can be changed into another prime (31929041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15964524 + 15964525.

It is an arithmetic number, because the mean of its divisors is an integer number (15964525).

Almost surely, 2^31929049 is an apocalyptic number.

It is an amenable number.

31929049 is a deficient number, since it is larger than the sum of its proper divisors (1).

31929049 is an equidigital number, since it uses as much as digits as its factorization.

31929049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 31929049 is about 5650.5795278007. The cubic root of 31929049 is about 317.2453957378.

It can be divided in two parts, 3192904 and 9, that added together give a palindrome (3192913).

The spelling of 31929049 in words is "thirty-one million, nine hundred twenty-nine thousand, forty-nine".