31405156465450 has 48 divisors (see below), whose sum is σ = 59414481292320. Its totient is φ = 12346895000000.

The previous prime is 31405156465427. The next prime is 31405156465481. The reversal of 31405156465450 is 5456465150413.

It is a junction number, because it is equal to n+sod(n) for n = 31405156465394 and 31405156465403.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15260325 + ... + 17195575.

It is an arithmetic number, because the mean of its divisors is an integer number (1237801693590).

Almost surely, 2^{31405156465450} is an apocalyptic number.

31405156465450 is a deficient number, since it is larger than the sum of its proper divisors (28009324826870).

31405156465450 is a wasteful number, since it uses less digits than its factorization.

31405156465450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940823 (or 1940818 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 49.

The spelling of 31405156465450 in words is "thirty-one trillion, four hundred five billion, one hundred fifty-six million, four hundred sixty-five thousand, four hundred fifty".