210139831404 has 36 divisors (see below), whose sum is σ = 531249866784. Its totient is φ = 70038293472.

The previous prime is 210139831403. The next prime is 210139831417. The reversal of 210139831404 is 404138931012.

210139831404 is a `hidden beast` number, since 210 + 1 + 3 + 9 + 8 + 31 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×210139831404² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (210139831403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35307 + ... + 649250.

It is an arithmetic number, because the mean of its divisors is an integer number (14756940744).

Almost surely, 2^210139831404 is an apocalyptic number.

It is an amenable number.

210139831404 is an abundant number, since it is smaller than the sum of its proper divisors (321110035380).

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

210139831404 is a wasteful number, since it uses less digits than its factorization.

210139831404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693094 (or 693089 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 210139831404 in words is "two hundred ten billion, one hundred thirty-nine million, eight hundred thirty-one thousand, four hundred four".