31425320012 has 24 divisors (see below), whose sum is σ = 58620088800. Its totient is φ = 14689130240.

The previous prime is 31425319997. The next prime is 31425320033. The reversal of 31425320012 is 21002352413.

It is a self number, because there is not a number n which added to its sum of digits gives 31425320012.

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, 1540664 + ... + 1560927.

It is an arithmetic number, because the mean of its divisors is an integer number (2442503700).

Almost surely, 2^31425320012 is an apocalyptic number.

It is an amenable number.

31425320012 is a deficient number, since it is larger than the sum of its proper divisors (27194768788).

31425320012 is a wasteful number, since it uses less digits than its factorization.

31425320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101761 (or 3101759 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 31425320012 its reverse (21002352413), we get a palindrome (52427672425).

The spelling of 31425320012 in words is "thirty-one billion, four hundred twenty-five million, three hundred twenty thousand, twelve".