1320531434 has 4 divisors (see below), whose sum is σ = 1980797154. Its totient is φ = 660265716.

The previous prime is 1320531431. The next prime is 1320531437. The reversal of 1320531434 is 4341350231.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1320531431) and next prime (1320531437).

It can be written as a sum of positive squares in only one way, i.e., 1320232225 + 299209 = 36335^2 + 547^2 .

It is not an unprimeable number, because it can be changed into a prime (1320531431) 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 as a sum of consecutive naturals, namely, 330132857 + ... + 330132860.

Almost surely, 2^1320531434 is an apocalyptic number.

1320531434 is a deficient number, since it is larger than the sum of its proper divisors (660265720).

1320531434 is an equidigital number, since it uses as much as digits as its factorization.

1320531434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660265719.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1320531434 is about 36339.1171329189. The cubic root of 1320531434 is about 1097.1085034968.

Adding to 1320531434 its reverse (4341350231), we get a palindrome (5661881665).

The spelling of 1320531434 in words is "one billion, three hundred twenty million, five hundred thirty-one thousand, four hundred thirty-four".