1231302015 has 12 divisors (see below), whose sum is σ = 2134256904. Its totient is φ = 656694384.

The previous prime is 1231302001. The next prime is 1231302031. The reversal of 1231302015 is 5102031321.

It is not a de Polignac number, because 1231302015 - 2⁵ = 1231301983 is a prime.

It is a super-2 number, since 2×1231302015² = 3032209304286120450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13681089 + ... + 13681178.

It is an arithmetic number, because the mean of its divisors is an integer number (177854742).

Almost surely, 2^1231302015 is an apocalyptic number.

1231302015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1231302015 is a deficient number, since it is larger than the sum of its proper divisors (902954889).

1231302015 is a wasteful number, since it uses less digits than its factorization.

1231302015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27362278 (or 27362275 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1231302015 is about 35089.9132942787. The cubic root of 1231302015 is about 1071.8191939882.

Adding to 1231302015 its reverse (5102031321), we get a palindrome (6333333336).

The spelling of 1231302015 in words is "one billion, two hundred thirty-one million, three hundred two thousand, fifteen".