1040232191 has 2 divisors, whose sum is σ = 1040232192. Its totient is φ = 1040232190.

The previous prime is 1040232181. The next prime is 1040232211. The reversal of 1040232191 is 1912320401.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040232191 is a prime.

It is a super-2 number, since 2×1040232191² = 2164166022385320962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040232131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520116095 + 520116096.

It is an arithmetic number, because the mean of its divisors is an integer number (520116096).

Almost surely, 2^1040232191 is an apocalyptic number.

1040232191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040232191 is an equidigital number, since it uses as much as digits as its factorization.

1040232191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1040232191 is about 32252.6307609162. The cubic root of 1040232191 is about 1013.2347977273.

Adding to 1040232191 its reverse (1912320401), we get a palindrome (2952552592).

The spelling of 1040232191 in words is "one billion, forty million, two hundred thirty-two thousand, one hundred ninety-one".