1321400151 has 6 divisors (see below), whose sum is σ = 1908689120. Its totient is φ = 880933428.

The previous prime is 1321400149. The next prime is 1321400161. The reversal of 1321400151 is 1510041231.

It is not a de Polignac number, because 1321400151 - 2¹ = 1321400149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321400131) 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 5 ways as a sum of consecutive naturals, for example, 73411111 + ... + 73411128.

Almost surely, 2^1321400151 is an apocalyptic number.

1321400151 is a deficient number, since it is larger than the sum of its proper divisors (587288969).

1321400151 is a wasteful number, since it uses less digits than its factorization.

1321400151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146822245 (or 146822242 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1321400151 is about 36351.0680860962. The cubic root of 1321400151 is about 1097.3490298648.

Adding to 1321400151 its reverse (1510041231), we get a palindrome (2831441382).

The spelling of 1321400151 in words is "one billion, three hundred twenty-one million, four hundred thousand, one hundred fifty-one".