1234331021 has 12 divisors (see below), whose sum is σ = 1566387360. Its totient is φ = 961815960.

The previous prime is 1234331011. The next prime is 1234331023. The reversal of 1234331021 is 1201334321.

It is not a de Polignac number, because 1234331021 - 2¹⁰ = 1234329997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1234330984 and 1234331002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234331023) 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, 1144481 + ... + 1145558.

It is an arithmetic number, because the mean of its divisors is an integer number (130532280).

Almost surely, 2^1234331021 is an apocalyptic number.

1234331021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1234331021 is a deficient number, since it is larger than the sum of its proper divisors (332056339).

1234331021 is a wasteful number, since it uses less digits than its factorization.

1234331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290064 (or 2290057 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1234331021 is about 35133.0474197727. The cubic root of 1234331021 is about 1072.6973669009.

Adding to 1234331021 its reverse (1201334321), we get a palindrome (2435665342).

The spelling of 1234331021 in words is "one billion, two hundred thirty-four million, three hundred thirty-one thousand, twenty-one".