31793429 has 6 divisors (see below), whose sum is σ = 33236406. Its totient is φ = 30410600.

The previous prime is 31793423. The next prime is 31793431. The reversal of 31793429 is 92439713.

It can be written as a sum of positive squares in only one way, i.e., 27019204 + 4774225 = 5198^2 + 2185^2 .

It is not a de Polignac number, because 31793429 - 2⁴ = 31793413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31793392 and 31793401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31793423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29522 + ... + 30579.

It is an arithmetic number, because the mean of its divisors is an integer number (5539401).

Almost surely, 2^31793429 is an apocalyptic number.

It is an amenable number.

31793429 is a deficient number, since it is larger than the sum of its proper divisors (1442977).

31793429 is an equidigital number, since it uses as much as digits as its factorization.

31793429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60147 (or 60124 counting only the distinct ones).

The product of its digits is 40824, while the sum is 38.

The square root of 31793429 is about 5638.5662184637. The cubic root of 31793429 is about 316.7955871501.

The spelling of 31793429 in words is "thirty-one million, seven hundred ninety-three thousand, four hundred twenty-nine".