211020313040 has 40 divisors (see below), whose sum is σ = 491140484640. Its totient is φ = 84318962816.

The previous prime is 211020312989. The next prime is 211020313093. The reversal of 211020313040 is 40313020112.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 1316930 + ... + 1468449.

It is an arithmetic number, because the mean of its divisors is an integer number (12278512116).

Almost surely, 2^211020313040 is an apocalyptic number.

211020313040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020313040 is an abundant number, since it is smaller than the sum of its proper divisors (280120171600).

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

211020313040 is a wasteful number, since it uses less digits than its factorization.

211020313040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786339 (or 2786333 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 211020313040 its reverse (40313020112), we get a palindrome (251333333152).

The spelling of 211020313040 in words is "two hundred eleven billion, twenty million, three hundred thirteen thousand, forty".