31425655940 has 24 divisors (see below), whose sum is σ = 75421574592. Its totient is φ = 10774510560.

The previous prime is 31425655939. The next prime is 31425655957. The reversal of 31425655940 is 4955652413.

It is a junction number, because it is equal to n+sod(n) for n = 31425655891 and 31425655900.

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, 112234346 + ... + 112234625.

It is an arithmetic number, because the mean of its divisors is an integer number (3142565608).

Almost surely, 2^31425655940 is an apocalyptic number.

It is an amenable number.

31425655940 is an abundant number, since it is smaller than the sum of its proper divisors (43995918652).

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

31425655940 is a wasteful number, since it uses less digits than its factorization.

31425655940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224468987 (or 224468985 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 31425655940 in words is "thirty-one billion, four hundred twenty-five million, six hundred fifty-five thousand, nine hundred forty".