1131402215 has 16 divisors (see below), whose sum is σ = 1435098720. Its totient is φ = 853908480.

The previous prime is 1131402211. The next prime is 1131402229. The reversal of 1131402215 is 5122041311.

It is not a de Polignac number, because 1131402215 - 2² = 1131402211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131402211) 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, 1814 + ... + 47603.

It is an arithmetic number, because the mean of its divisors is an integer number (89693670).

Almost surely, 2^1131402215 is an apocalyptic number.

1131402215 is a deficient number, since it is larger than the sum of its proper divisors (303696505).

1131402215 is a wasteful number, since it uses less digits than its factorization.

1131402215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49682.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1131402215 is about 33636.3228519409. The cubic root of 1131402215 is about 1042.0110909969.

Adding to 1131402215 its reverse (5122041311), we get a palindrome (6253443526).

The spelling of 1131402215 in words is "one billion, one hundred thirty-one million, four hundred two thousand, two hundred fifteen".