1321154152 has 16 divisors (see below), whose sum is σ = 2537583300. Its totient is φ = 644465280.

The previous prime is 1321154141. The next prime is 1321154239. The reversal of 1321154152 is 2514511231.

It can be written as a sum of positive squares in 2 ways, for example, as 882921796 + 438232356 = 29714^2 + 20934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013627 + ... + 2014282.

Almost surely, 2^1321154152 is an apocalyptic number.

It is an amenable number.

1321154152 is a deficient number, since it is larger than the sum of its proper divisors (1216429148).

1321154152 is a wasteful number, since it uses less digits than its factorization.

1321154152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027956 (or 4027952 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 1321154152 is about 36347.6842728667. The cubic root of 1321154152 is about 1097.2809294949.

Adding to 1321154152 its reverse (2514511231), we get a palindrome (3835665383).

The spelling of 1321154152 in words is "one billion, three hundred twenty-one million, one hundred fifty-four thousand, one hundred fifty-two".