31444474730146 has 16 divisors (see below), whose sum is σ = 48852581882040. Its totient is φ = 15161601468160.

The previous prime is 31444474730131. The next prime is 31444474730189. The reversal of 31444474730146 is 64103747444413.

It can be written as a sum of positive squares in 4 ways, for example, as 30465045835225 + 979428894921 = 5519515^2 + 989661^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31444474730093 and 31444474730102.

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, 330126631 + ... + 330221866.

Almost surely, 2^{31444474730146} is an apocalyptic number.

31444474730146 is a deficient number, since it is larger than the sum of its proper divisors (17408107151894).

31444474730146 is a wasteful number, since it uses less digits than its factorization.

31444474730146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660349349.

The product of its (nonzero) digits is 10838016, while the sum is 52.

The spelling of 31444474730146 in words is "thirty-one trillion, four hundred forty-four billion, four hundred seventy-four million, seven hundred thirty thousand, one hundred forty-six".