231122436 has 12 divisors (see below), whose sum is σ = 539285712. Its totient is φ = 77040808.

The previous prime is 231122417. The next prime is 231122443. The reversal of 231122436 is 634221132.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9630090 + ... + 9630113.

It is an arithmetic number, because the mean of its divisors is an integer number (44940476).

Almost surely, 2^231122436 is an apocalyptic number.

It is an amenable number.

231122436 is an abundant number, since it is smaller than the sum of its proper divisors (308163276).

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

231122436 is a wasteful number, since it uses less digits than its factorization.

231122436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19260210 (or 19260208 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 231122436 is about 15202.7114686822. The cubic root of 231122436 is about 613.6876291316.

Adding to 231122436 its reverse (634221132), we get a palindrome (865343568).

The spelling of 231122436 in words is "two hundred thirty-one million, one hundred twenty-two thousand, four hundred thirty-six".