31429630 has 8 divisors (see below), whose sum is σ = 56573352. Its totient is φ = 12571848.

The previous prime is 31429621. The next prime is 31429637. The reversal of 31429630 is 3692413.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31429637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571472 + ... + 1571491.

It is an arithmetic number, because the mean of its divisors is an integer number (7071669).

Almost surely, 2^31429630 is an apocalyptic number.

31429630 is a deficient number, since it is larger than the sum of its proper divisors (25143722).

31429630 is a wasteful number, since it uses less digits than its factorization.

31429630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142970.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 31429630 is about 5606.2135171611. The cubic root of 31429630 is about 315.5826287597.

The spelling of 31429630 in words is "thirty-one million, four hundred twenty-nine thousand, six hundred thirty".