1145043431 has 16 divisors (see below), whose sum is σ = 1397282304. Its totient is φ = 916955424.

The previous prime is 1145043409. The next prime is 1145043433. The reversal of 1145043431 is 1343405411.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1145043431 is a prime.

It is a super-2 number, since 2×1145043431² = 2622248917752503522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145043431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145043433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75776 + ... + 89621.

It is an arithmetic number, because the mean of its divisors is an integer number (87330144).

Almost surely, 2^1145043431 is an apocalyptic number.

1145043431 is a deficient number, since it is larger than the sum of its proper divisors (252238873).

1145043431 is a wasteful number, since it uses less digits than its factorization.

1145043431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165470.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1145043431 is about 33838.4903770839. The cubic root of 1145043431 is about 1046.1821838637.

Adding to 1145043431 its reverse (1343405411), we get a palindrome (2488448842).

The spelling of 1145043431 in words is "one billion, one hundred forty-five million, forty-three thousand, four hundred thirty-one".