1040234381 has 2 divisors, whose sum is σ = 1040234382. Its totient is φ = 1040234380.

The previous prime is 1040234359. The next prime is 1040234383. The reversal of 1040234381 is 1834320401.

1040234381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617274025 + 422960356 = 24845^2 + 20566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040234381 is a prime.

It is a super-2 number, since 2×1040234381² = 2164175134828906322, which contains 22 as substring.

Together with 1040234383, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1040234381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040234383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520117190 + 520117191.

It is an arithmetic number, because the mean of its divisors is an integer number (520117191).

Almost surely, 2^1040234381 is an apocalyptic number.

It is an amenable number.

1040234381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040234381 is an equidigital number, since it uses as much as digits as its factorization.

1040234381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1040234381 is about 32252.6647116172. The cubic root of 1040234381 is about 1013.2355087809.

Adding to 1040234381 its reverse (1834320401), we get a palindrome (2874554782).

The spelling of 1040234381 in words is "one billion, forty million, two hundred thirty-four thousand, three hundred eighty-one".