31424630 has 16 divisors (see below), whose sum is σ = 57247344. Its totient is φ = 12418080.

The previous prime is 31424629. The next prime is 31424663. The reversal of 31424630 is 3642413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31424596 and 31424605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18101 + ... + 19760.

It is an arithmetic number, because the mean of its divisors is an integer number (3577959).

Almost surely, 2^31424630 is an apocalyptic number.

31424630 is a deficient number, since it is larger than the sum of its proper divisors (25822714).

31424630 is a wasteful number, since it uses less digits than its factorization.

31424630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37951.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 31424630 is about 5605.7675656417. The cubic root of 31424630 is about 315.5658929934.

The spelling of 31424630 in words is "thirty-one million, four hundred twenty-four thousand, six hundred thirty".