1011431322 has 24 divisors (see below), whose sum is σ = 2390656320. Its totient is φ = 306494280.

The previous prime is 1011431321. The next prime is 1011431329. The reversal of 1011431322 is 2231341101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1011431295 and 1011431304.

It is not an unprimeable number, because it can be changed into a prime (1011431321) 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, 2553922 + ... + 2554317.

It is an arithmetic number, because the mean of its divisors is an integer number (99610680).

Almost surely, 2^1011431322 is an apocalyptic number.

1011431322 is an abundant number, since it is smaller than the sum of its proper divisors (1379224998).

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

1011431322 is a wasteful number, since it uses less digits than its factorization.

1011431322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108258 (or 5108255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1011431322 is about 31803.0080652758. The cubic root of 1011431322 is about 1003.7960127209.

Adding to 1011431322 its reverse (2231341101), we get a palindrome (3242772423).

It can be divided in two parts, 1011431 and 322, that added together give a triangular number (1011753 = T₁₄₂₂).

The spelling of 1011431322 in words is "one billion, eleven million, four hundred thirty-one thousand, three hundred twenty-two".