1231033215 has 16 divisors (see below), whose sum is σ = 1970414208. Its totient is φ = 656297376.

The previous prime is 1231033211. The next prime is 1231033229. The reversal of 1231033215 is 5123301321.

It is not a de Polignac number, because 1231033215 - 2² = 1231033211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231033191 and 1231033200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231033211) 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, 28212 + ... + 57078.

It is an arithmetic number, because the mean of its divisors is an integer number (123150888).

Almost surely, 2^1231033215 is an apocalyptic number.

1231033215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1231033215 is a deficient number, since it is larger than the sum of its proper divisors (739380993).

1231033215 is a wasteful number, since it uses less digits than its factorization.

1231033215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31718.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1231033215 is about 35086.0829247153. The cubic root of 1231033215 is about 1071.7411936375.

Adding to 1231033215 its reverse (5123301321), we get a palindrome (6354334536).

The spelling of 1231033215 in words is "one billion, two hundred thirty-one million, thirty-three thousand, two hundred fifteen".