1321130151 has 72 divisors (see below), whose sum is σ = 2177295120. Its totient is φ = 770837760.

The previous prime is 1321130147. The next prime is 1321130201. The reversal of 1321130151 is 1510311231.

It is not a de Polignac number, because 1321130151 - 2² = 1321130147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321130101) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 4167445 + ... + 4167761.

It is an arithmetic number, because the mean of its divisors is an integer number (30240210).

Almost surely, 2^1321130151 is an apocalyptic number.

1321130151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1321130151 is a deficient number, since it is larger than the sum of its proper divisors (856164969).

1321130151 is a wasteful number, since it uses less digits than its factorization.

1321130151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1321130151 is about 36347.3541127824. The cubic root of 1321130151 is about 1097.2742847999.

Adding to 1321130151 its reverse (1510311231), we get a palindrome (2831441382).

The spelling of 1321130151 in words is "one billion, three hundred twenty-one million, one hundred thirty thousand, one hundred fifty-one".