31429407 has 8 divisors (see below), whose sum is σ = 41963184. Its totient is φ = 20924288.

The previous prime is 31429403. The next prime is 31429421. The reversal of 31429407 is 70492413.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31429407 - 2² = 31429403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31429403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4458 + ... + 9095.

It is an arithmetic number, because the mean of its divisors is an integer number (5245398).

Almost surely, 2^31429407 is an apocalyptic number.

31429407 is a deficient number, since it is larger than the sum of its proper divisors (10533777).

31429407 is a wasteful number, since it uses less digits than its factorization.

31429407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14329.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 31429407 is about 5606.1936284791. The cubic root of 31429407 is about 315.5818823824.

The spelling of 31429407 in words is "thirty-one million, four hundred twenty-nine thousand, four hundred seven".