1040143431 has 4 divisors (see below), whose sum is σ = 1386857912. Its totient is φ = 693428952.

The previous prime is 1040143427. The next prime is 1040143439. The reversal of 1040143431 is 1343410401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343410401 = 3 ⋅447803467.

It is not a de Polignac number, because 1040143431 - 2² = 1040143427 is a prime.

It is a super-2 number, since 2×1040143431² = 2163796714104903522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040143398 and 1040143407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040143439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173357236 + ... + 173357241.

It is an arithmetic number, because the mean of its divisors is an integer number (346714478).

Almost surely, 2^1040143431 is an apocalyptic number.

1040143431 is a deficient number, since it is larger than the sum of its proper divisors (346714481).

1040143431 is an equidigital number, since it uses as much as digits as its factorization.

1040143431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346714480.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1040143431 is about 32251.2547197780. The cubic root of 1040143431 is about 1013.2059781107.

Adding to 1040143431 its reverse (1343410401), we get a palindrome (2383553832).

The spelling of 1040143431 in words is "one billion, forty million, one hundred forty-three thousand, four hundred thirty-one".