1231350515 has 8 divisors (see below), whose sum is σ = 1498432608. Its totient is φ = 971205760.

The previous prime is 1231350503. The next prime is 1231350541. The reversal of 1231350515 is 5150531321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231350515 - 2¹² = 1231346419 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 1733942 + ... + 1734651.

It is an arithmetic number, because the mean of its divisors is an integer number (187304076).

Almost surely, 2^1231350515 is an apocalyptic number.

1231350515 is a deficient number, since it is larger than the sum of its proper divisors (267082093).

1231350515 is an equidigital number, since it uses as much as digits as its factorization.

1231350515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468669.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1231350515 is about 35090.6043692610. The cubic root of 1231350515 is about 1071.8332665032.

Adding to 1231350515 its reverse (5150531321), we get a palindrome (6381881836).

The spelling of 1231350515 in words is "one billion, two hundred thirty-one million, three hundred fifty thousand, five hundred fifteen".