231116436 has 24 divisors (see below), whose sum is σ = 599191040. Its totient is φ = 77038776.

The previous prime is 231116429. The next prime is 231116441. The reversal of 231116436 is 634611132.

231116436 is a `hidden beast` number, since 2 + 3 + 1 + 11 + 643 + 6 = 666.

231116436 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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, 1069876 + ... + 1070091.

Almost surely, 2^231116436 is an apocalyptic number.

It is an amenable number.

231116436 is an abundant number, since it is smaller than the sum of its proper divisors (368074604).

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

231116436 is a wasteful number, since it uses less digits than its factorization.

231116436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139980 (or 2139972 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 231116436 is about 15202.5141341819. The cubic root of 231116436 is about 613.6823185875.

Adding to 231116436 its reverse (634611132), we get a palindrome (865727568).

The spelling of 231116436 in words is "two hundred thirty-one million, one hundred sixteen thousand, four hundred thirty-six".