31953429 has 12 divisors (see below), whose sum is σ = 47228896. Its totient is φ = 20806632.

The previous prime is 31953413. The next prime is 31953431. The reversal of 31953429 is 92435913.

It is a happy number.

It is not a de Polignac number, because 31953429 - 2⁴ = 31953413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31953393 and 31953402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31953409) 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 in 11 ways as a sum of consecutive naturals, for example, 40897 + ... + 41670.

Almost surely, 2^31953429 is an apocalyptic number.

It is an amenable number.

31953429 is a deficient number, since it is larger than the sum of its proper divisors (15275467).

31953429 is a wasteful number, since it uses less digits than its factorization.

31953429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82616 (or 82613 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 31953429 is about 5652.7364169931. The cubic root of 31953429 is about 317.3261213386.

The spelling of 31953429 in words is "thirty-one million, nine hundred fifty-three thousand, four hundred twenty-nine".