211942542331 has 16 divisors (see below), whose sum is σ = 240278401440. Its totient is φ = 185327308800.

The previous prime is 211942542221. The next prime is 211942542337. The reversal of 211942542331 is 133245249112.

It is a cyclic number.

It is not a de Polignac number, because 211942542331 - 2¹⁵ = 211942509563 is a prime.

It is a super-2 number, since 2×211942542331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211942542337) 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, 3868731 + ... + 3923131.

It is an arithmetic number, because the mean of its divisors is an integer number (15017400090).

Almost surely, 2^211942542331 is an apocalyptic number.

211942542331 is a deficient number, since it is larger than the sum of its proper divisors (28335859109).

211942542331 is a wasteful number, since it uses less digits than its factorization.

211942542331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70206.

The product of its digits is 51840, while the sum is 37.

The spelling of 211942542331 in words is "two hundred eleven billion, nine hundred forty-two million, five hundred forty-two thousand, three hundred thirty-one".