1321400533 has 8 divisors (see below), whose sum is σ = 1341028440. Its totient is φ = 1301879040.

The previous prime is 1321400527. The next prime is 1321400539. The reversal of 1321400533 is 3350041231.

It is an interprime number because it is at equal distance from previous prime (1321400527) and next prime (1321400539).

It can be written as a sum of positive squares in 4 ways, for example, as 3928324 + 1317472209 = 1982^2 + 36297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321400533 - 2¹³ = 1321392341 is a prime.

It is a super-2 number, since 2×1321400533² = 3492198737225368178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321400539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410 + ... + 51427.

It is an arithmetic number, because the mean of its divisors is an integer number (167628555).

Almost surely, 2^1321400533 is an apocalyptic number.

It is an amenable number.

1321400533 is a deficient number, since it is larger than the sum of its proper divisors (19627907).

1321400533 is an equidigital number, since it uses as much as digits as its factorization.

1321400533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53207.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1321400533 is about 36351.0733404118. The cubic root of 1321400533 is about 1097.3491356080.

Adding to 1321400533 its reverse (3350041231), we get a palindrome (4671441764).

The spelling of 1321400533 in words is "one billion, three hundred twenty-one million, four hundred thousand, five hundred thirty-three".