1043231511 has 48 divisors (see below), whose sum is σ = 1668522240. Its totient is φ = 577745280.

The previous prime is 1043231507. The next prime is 1043231513. The reversal of 1043231511 is 1151323401.

It is not a de Polignac number, because 1043231511 - 2² = 1043231507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043231513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1078350 + ... + 1079316.

It is an arithmetic number, because the mean of its divisors is an integer number (34760880).

Almost surely, 2^1043231511 is an apocalyptic number.

1043231511 is a deficient number, since it is larger than the sum of its proper divisors (625290729).

1043231511 is a wasteful number, since it uses less digits than its factorization.

1043231511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1043231511 is about 32299.0945848332. The cubic root of 1043231511 is about 1014.2076892521.

Adding to 1043231511 its reverse (1151323401), we get a palindrome (2194554912).

The spelling of 1043231511 in words is "one billion, forty-three million, two hundred thirty-one thousand, five hundred eleven".