31532447552149 has 16 divisors (see below), whose sum is σ = 31640130010944. Its totient is φ = 31424924320000.

The previous prime is 31532447552147. The next prime is 31532447552189. The reversal of 31532447552149 is 94125574423513.

It is a cyclic number.

It is not a de Polignac number, because 31532447552149 - 2¹ = 31532447552147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31532447552149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31532447552143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2344238874 + ... + 2344252324.

It is an arithmetic number, because the mean of its divisors is an integer number (1977508125684).

Almost surely, 2^{31532447552149} is an apocalyptic number.

It is an amenable number.

31532447552149 is a deficient number, since it is larger than the sum of its proper divisors (107682458795).

31532447552149 is a wasteful number, since it uses less digits than its factorization.

31532447552149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18788.

The product of its digits is 18144000, while the sum is 55.

The spelling of 31532447552149 in words is "thirty-one trillion, five hundred thirty-two billion, four hundred forty-seven million, five hundred fifty-two thousand, one hundred forty-nine".