349213071987 has 32 divisors (see below), whose sum is σ = 589922544960. Its totient is φ = 202259151360.

The previous prime is 349213071931. The next prime is 349213071997. The reversal of 349213071987 is 789170312943.

349213071987 is a `hidden beast` number, since 3 + 492 + 1 + 3 + 0 + 71 + 9 + 87 = 666.

It is not a de Polignac number, because 349213071987 - 2¹⁴ = 349213055603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349213071997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29256064 + ... + 29267997.

It is an arithmetic number, because the mean of its divisors is an integer number (18435079530).

Almost surely, 2^349213071987 is an apocalyptic number.

349213071987 is a deficient number, since it is larger than the sum of its proper divisors (240709472973).

349213071987 is a wasteful number, since it uses less digits than its factorization.

349213071987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58524100 (or 58524094 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 349213071987 in words is "three hundred forty-nine billion, two hundred thirteen million, seventy-one thousand, nine hundred eighty-seven".