31425140305 has 32 divisors (see below), whose sum is σ = 43016085504. Its totient is φ = 21832928256.

The previous prime is 31425140291. The next prime is 31425140333. The reversal of 31425140305 is 50304152413.

It is a cyclic number.

It is not a de Polignac number, because 31425140305 - 2⁷ = 31425140177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5193792 + ... + 5199838.

It is an arithmetic number, because the mean of its divisors is an integer number (1344252672).

Almost surely, 2^31425140305 is an apocalyptic number.

It is an amenable number.

31425140305 is a deficient number, since it is larger than the sum of its proper divisors (11590945199).

31425140305 is a wasteful number, since it uses less digits than its factorization.

31425140305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 31425140305 its reverse (50304152413), we get a palindrome (81729292718).

The spelling of 31425140305 in words is "thirty-one billion, four hundred twenty-five million, one hundred forty thousand, three hundred five".