31420430 has 8 divisors (see below), whose sum is σ = 56556792. Its totient is φ = 12568168.

The previous prime is 31420409. The next prime is 31420447. The reversal of 31420430 is 3402413.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31420399 and 31420408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571012 + ... + 1571031.

It is an arithmetic number, because the mean of its divisors is an integer number (7069599).

Almost surely, 2^31420430 is an apocalyptic number.

31420430 is a deficient number, since it is larger than the sum of its proper divisors (25136362).

31420430 is a wasteful number, since it uses less digits than its factorization.

31420430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142050.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 31420430 is about 5605.3929389473. The cubic root of 31420430 is about 315.5518335778.

Adding to 31420430 its reverse (3402413), we get a palindrome (34822843).

The spelling of 31420430 in words is "thirty-one million, four hundred twenty thousand, four hundred thirty".