1022123431 has 4 divisors (see below), whose sum is σ = 1168141072. Its totient is φ = 876105792.

The previous prime is 1022123387. The next prime is 1022123441. The reversal of 1022123431 is 1343212201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1022123431 - 2⁷ = 1022123303 is a prime.

It is a super-2 number, since 2×1022123431² = 2089472616398423522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1022123399 and 1022123408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022123441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73008810 + ... + 73008823.

It is an arithmetic number, because the mean of its divisors is an integer number (292035268).

Almost surely, 2^1022123431 is an apocalyptic number.

1022123431 is a deficient number, since it is larger than the sum of its proper divisors (146017641).

1022123431 is an equidigital number, since it uses as much as digits as its factorization.

1022123431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146017640.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1022123431 is about 31970.6651635527. The cubic root of 1022123431 is about 1007.3207527971.

Adding to 1022123431 its reverse (1343212201), we get a palindrome (2365335632).

The spelling of 1022123431 in words is "one billion, twenty-two million, one hundred twenty-three thousand, four hundred thirty-one".