1121312315 has 16 divisors (see below), whose sum is σ = 1397329920. Its totient is φ = 862894560.

The previous prime is 1121312279. The next prime is 1121312317. The reversal of 1121312315 is 5132131211.

It is not a de Polignac number, because 1121312315 - 2¹⁰ = 1121311291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121312317) 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, 4226 + ... + 47544.

It is an arithmetic number, because the mean of its divisors is an integer number (87333120).

Almost surely, 2^1121312315 is an apocalyptic number.

1121312315 is a deficient number, since it is larger than the sum of its proper divisors (276017605).

1121312315 is a wasteful number, since it uses less digits than its factorization.

1121312315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43522.

The product of its digits is 180, while the sum is 20.

The square root of 1121312315 is about 33486.0017768619. The cubic root of 1121312315 is about 1038.9042684780.

Adding to 1121312315 its reverse (5132131211), we get a palindrome (6253443526).

The spelling of 1121312315 in words is "one billion, one hundred twenty-one million, three hundred twelve thousand, three hundred fifteen".