1043231240 has 32 divisors (see below), whose sum is σ = 2449327680. Its totient is φ = 399148992.

The previous prime is 1043231237. The next prime is 1043231249. The reversal of 1043231240 is 421323401.

It is a super-2 number, since 2×1043231240² = 2176662840223875200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1043231249) 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, 566054 + ... + 567893.

It is an arithmetic number, because the mean of its divisors is an integer number (76541490).

Almost surely, 2^1043231240 is an apocalyptic number.

1043231240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043231240 is an abundant number, since it is smaller than the sum of its proper divisors (1406096440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1043231240 is a wasteful number, since it uses less digits than its factorization.

1043231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133981 (or 1133977 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1043231240 is about 32299.0903896689. The cubic root of 1043231240 is about 1014.2076014320.

Adding to 1043231240 its reverse (421323401), we get a palindrome (1464554641).

The spelling of 1043231240 in words is "one billion, forty-three million, two hundred thirty-one thousand, two hundred forty".