1201512315 has 32 divisors (see below), whose sum is σ = 2039722560. Its totient is φ = 601862144.

The previous prime is 1201512313. The next prime is 1201512379. The reversal of 1201512315 is 5132151021.

It is a cyclic number.

It is not a de Polignac number, because 1201512315 - 2¹ = 1201512313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201512291 and 1201512300.

It is not an unprimeable number, because it can be changed into a prime (1201512313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125167 + ... + 134423.

It is an arithmetic number, because the mean of its divisors is an integer number (63741330).

Almost surely, 2^1201512315 is an apocalyptic number.

1201512315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1201512315 is a deficient number, since it is larger than the sum of its proper divisors (838210245).

1201512315 is a wasteful number, since it uses less digits than its factorization.

1201512315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9791.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1201512315 is about 34662.8376651422. The cubic root of 1201512315 is about 1063.1047913644.

Adding to 1201512315 its reverse (5132151021), we get a palindrome (6333663336).

The spelling of 1201512315 in words is "one billion, two hundred one million, five hundred twelve thousand, three hundred fifteen".