231232222010440 has 128 divisors (see below), whose sum is σ = 595310209228800. Its totient is φ = 79184579685120.

The previous prime is 231232222010411. The next prime is 231232222010479. The reversal of 231232222010440 is 44010222232132.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 231232222010399 and 231232222010408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1258718995 + ... + 1258902685.

It is an arithmetic number, because the mean of its divisors is an integer number (4650861009600).

Almost surely, 2^{231232222010440} is an apocalyptic number.

231232222010440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231232222010440 is an abundant number, since it is smaller than the sum of its proper divisors (364077987218360).

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

231232222010440 is a wasteful number, since it uses less digits than its factorization.

231232222010440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189075 (or 189071 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 231232222010440 its reverse (44010222232132), we get a palindrome (275242444242572).

The spelling of 231232222010440 in words is "two hundred thirty-one trillion, two hundred thirty-two billion, two hundred twenty-two million, ten thousand, four hundred forty".