1620033323131 has 4 divisors (see below), whose sum is σ = 1675896541200. Its totient is φ = 1564170105064.

The previous prime is 1620033323101. The next prime is 1620033323149. The reversal of 1620033323131 is 1313233300261.

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 1620033323131 - 2⁹ = 1620033322619 is a prime.

It is a super-2 number, since 2×1620033323131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1620033323131.

It is not an unprimeable number, because it can be changed into a prime (1620033323101) 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 in 3 ways as a sum of consecutive naturals, for example, 27931608991 + ... + 27931609048.

It is an arithmetic number, because the mean of its divisors is an integer number (418974135300).

Almost surely, 2^{1620033323131} is an apocalyptic number.

1620033323131 is a deficient number, since it is larger than the sum of its proper divisors (55863218069).

1620033323131 is an equidigital number, since it uses as much as digits as its factorization.

1620033323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55863218068.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 1620033323131 its reverse (1313233300261), we get a palindrome (2933266623392).

The spelling of 1620033323131 in words is "one trillion, six hundred twenty billion, thirty-three million, three hundred twenty-three thousand, one hundred thirty-one".