31648129146 has 12 divisors (see below), whose sum is σ = 68570946522. Its totient is φ = 10549376376.

The previous prime is 31648129127. The next prime is 31648129147. The reversal of 31648129146 is 64192184613.

31648129146 is a `hidden beast` number, since 3 + 1 + 6 + 481 + 29 + 146 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16151613921 + 15496515225 = 127089^2 + 124485^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31648129147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 879114681 + ... + 879114716.

Almost surely, 2^31648129146 is an apocalyptic number.

31648129146 is an abundant number, since it is smaller than the sum of its proper divisors (36922817376).

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

31648129146 is a wasteful number, since it uses less digits than its factorization.

31648129146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758229405 (or 1758229402 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The spelling of 31648129146 in words is "thirty-one billion, six hundred forty-eight million, one hundred twenty-nine thousand, one hundred forty-six".