31485453746 has 8 divisors (see below), whose sum is σ = 47398680300. Its totient is φ = 15685893648.

The previous prime is 31485453697. The next prime is 31485453749. The reversal of 31485453746 is 64735458413.

It can be written as a sum of positive squares in 2 ways, for example, as 23092145521 + 8393308225 = 151961^2 + 91615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31485453694 and 31485453703.

It is not an unprimeable number, because it can be changed into a prime (31485453749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28415921 + ... + 28417028.

Almost surely, 2^31485453746 is an apocalyptic number.

31485453746 is a deficient number, since it is larger than the sum of its proper divisors (15913226554).

31485453746 is a wasteful number, since it uses less digits than its factorization.

31485453746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56833228.

The product of its digits is 4838400, while the sum is 50.

The spelling of 31485453746 in words is "thirty-one billion, four hundred eighty-five million, four hundred fifty-three thousand, seven hundred forty-six".