31430460 has 48 divisors (see below), whose sum is σ = 88252416. Its totient is φ = 8357952.

The previous prime is 31430453. The next prime is 31430473. The reversal of 31430460 is 6403413.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35989 + ... + 36851.

It is an arithmetic number, because the mean of its divisors is an integer number (1838592).

Almost surely, 2^31430460 is an apocalyptic number.

31430460 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31430460 is an abundant number, since it is smaller than the sum of its proper divisors (56821956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31430460 is a wasteful number, since it uses less digits than its factorization.

31430460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 31430460 is about 5606.2875416803. The cubic root of 31430460 is about 315.5854067251.

Adding to 31430460 its reverse (6403413), we get a palindrome (37833873).

The spelling of 31430460 in words is "thirty-one million, four hundred thirty thousand, four hundred sixty".