1043400231 has 8 divisors (see below), whose sum is σ = 1545778160. Its totient is φ = 695600136.

The previous prime is 1043400227. The next prime is 1043400233. The reversal of 1043400231 is 1320043401.

1043400231 is a `hidden beast` number, since 1 + 0 + 434 + 0 + 0 + 231 = 666.

It is not a de Polignac number, because 1043400231 - 2² = 1043400227 is a prime.

It is a super-2 number, since 2×1043400231² = 2177368084101706722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043400233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19322200 + ... + 19322253.

It is an arithmetic number, because the mean of its divisors is an integer number (193222270).

Almost surely, 2^1043400231 is an apocalyptic number.

1043400231 is a deficient number, since it is larger than the sum of its proper divisors (502377929).

1043400231 is an equidigital number, since it uses as much as digits as its factorization.

1043400231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38644462 (or 38644456 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1043400231 is about 32301.7063171592. The cubic root of 1043400231 is about 1014.2623616477.

Adding to 1043400231 its reverse (1320043401), we get a palindrome (2363443632).

The spelling of 1043400231 in words is "one billion, forty-three million, four hundred thousand, two hundred thirty-one".