1321152135 has 16 divisors (see below), whose sum is σ = 2118057984. Its totient is φ = 703209632.

The previous prime is 1321152121. The next prime is 1321152149. The reversal of 1321152135 is 5312511231.

It is an interprime number because it is at equal distance from previous prime (1321152121) and next prime (1321152149).

It is a cyclic number.

It is not a de Polignac number, because 1321152135 - 2⁶ = 1321152071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80007 + ... + 95096.

It is an arithmetic number, because the mean of its divisors is an integer number (132378624).

Almost surely, 2^1321152135 is an apocalyptic number.

1321152135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1321152135 is a deficient number, since it is larger than the sum of its proper divisors (796905849).

1321152135 is a wasteful number, since it uses less digits than its factorization.

1321152135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175614.

The product of its digits is 900, while the sum is 24.

The square root of 1321152135 is about 36347.6565269344. The cubic root of 1321152135 is about 1097.2803710900.

Adding to 1321152135 its reverse (5312511231), we get a palindrome (6633663366).

The spelling of 1321152135 in words is "one billion, three hundred twenty-one million, one hundred fifty-two thousand, one hundred thirty-five".