31445104355540 has 48 divisors (see below), whose sum is σ = 66976052532480. Its totient is φ = 12398799759360.

The previous prime is 31445104355407. The next prime is 31445104355633. The reversal of 31445104355540 is 4555340154413.

It is a junction number, because it is equal to n+sod(n) for n = 31445104355491 and 31445104355500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6593321 + ... + 10313199.

It is an arithmetic number, because the mean of its divisors is an integer number (1395334427760).

Almost surely, 2^{31445104355540} is an apocalyptic number.

It is an amenable number.

31445104355540 is an abundant number, since it is smaller than the sum of its proper divisors (35530948176940).

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

31445104355540 is a wasteful number, since it uses less digits than its factorization.

31445104355540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725912 (or 3725910 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 31445104355540 in words is "thirty-one trillion, four hundred forty-five billion, one hundred four million, three hundred fifty-five thousand, five hundred forty".