1356031321061 has 4 divisors (see below), whose sum is σ = 1375130353824. Its totient is φ = 1336932288300.

The previous prime is 1356031321027. The next prime is 1356031321063. The reversal of 1356031321061 is 1601231306531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1356031321061 - 2³⁰ = 1354957579237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356031321063) 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, 9549516275 + ... + 9549516416.

It is an arithmetic number, because the mean of its divisors is an integer number (343782588456).

Almost surely, 2^{1356031321061} is an apocalyptic number.

It is an amenable number.

1356031321061 is a deficient number, since it is larger than the sum of its proper divisors (19099032763).

1356031321061 is an equidigital number, since it uses as much as digits as its factorization.

1356031321061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19099032762.

The product of its (nonzero) digits is 9720, while the sum is 32.

Adding to 1356031321061 its reverse (1601231306531), we get a palindrome (2957262627592).

The spelling of 1356031321061 in words is "one trillion, three hundred fifty-six billion, thirty-one million, three hundred twenty-one thousand, sixty-one".