1320430501 has 4 divisors (see below), whose sum is σ = 1422002092. Its totient is φ = 1218858912.

The previous prime is 1320430493. The next prime is 1320430513. The reversal of 1320430501 is 1050340231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 339112225 + 981318276 = 18415^2 + 31326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320430501 - 2³ = 1320430493 is a prime.

It is a super-2 number, since 2×1320430501² = 3487073415942222002, 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 (1320430201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50785776 + ... + 50785801.

It is an arithmetic number, because the mean of its divisors is an integer number (355500523).

Almost surely, 2^1320430501 is an apocalyptic number.

It is an amenable number.

1320430501 is a deficient number, since it is larger than the sum of its proper divisors (101571591).

1320430501 is a wasteful number, since it uses less digits than its factorization.

1320430501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101571590.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1320430501 is about 36337.7283412158. The cubic root of 1320430501 is about 1097.0805507925.

Adding to 1320430501 its reverse (1050340231), we get a palindrome (2370770732).

The spelling of 1320430501 in words is "one billion, three hundred twenty million, four hundred thirty thousand, five hundred one".