1320011013431 has 4 divisors (see below), whose sum is σ = 1440012014664. Its totient is φ = 1200010012200.

The previous prime is 1320011013403. The next prime is 1320011013449. The reversal of 1320011013431 is 1343101100231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320011013431 - 2³⁰ = 1318937271607 is a prime.

It is a super-2 number, since 2×1320011013431² (a number of 25 digits) 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 (1320011013401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60000500600 + ... + 60000500621.

It is an arithmetic number, because the mean of its divisors is an integer number (360003003666).

Almost surely, 2^{1320011013431} is an apocalyptic number.

1320011013431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1320011013431 is a deficient number, since it is larger than the sum of its proper divisors (120001001233).

1320011013431 is a wasteful number, since it uses less digits than its factorization.

1320011013431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120001001232.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1320011013431 its reverse (1343101100231), we get a palindrome (2663112113662).

The spelling of 1320011013431 in words is "one trillion, three hundred twenty billion, eleven million, thirteen thousand, four hundred thirty-one".