2238631911 has 12 divisors (see below), whose sum is σ = 3353341992. Its totient is φ = 1492421112.

The previous prime is 2238631909. The next prime is 2238631919. The reversal of 2238631911 is 1191368322.

2238631911 is a `hidden beast` number, since 2 + 2 + 3 + 8 + 631 + 9 + 11 = 666.

It is not a de Polignac number, because 2238631911 - 2¹ = 2238631909 is a prime.

It is a super-2 number, since 2×2238631911² = 10022945665895023842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238631919) 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, 4605996 + ... + 4606481.

It is an arithmetic number, because the mean of its divisors is an integer number (279445166).

Almost surely, 2^2238631911 is an apocalyptic number.

2238631911 is a deficient number, since it is larger than the sum of its proper divisors (1114710081).

2238631911 is an frugal number, since it uses more digits than its factorization.

2238631911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212492 (or 9212480 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2238631911 is about 47314.1829793139. The cubic root of 2238631911 is about 1308.1600942415.

The spelling of 2238631911 in words is "two billion, two hundred thirty-eight million, six hundred thirty-one thousand, nine hundred eleven".