20331300031002 has 24 divisors (see below), whose sum is σ = 44051453930484. Its totient is φ = 6777053262144.

The previous prime is 20331300030973. The next prime is 20331300031019. The reversal of 20331300031002 is 20013000313302.

20331300031002 is a `hidden beast` number, since 2 + 0 + 331 + 300 + 0 + 31 + 0 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19489055158881 + 842244872121 = 4414641^2 + 917739^2 .

It is a super-2 number, since 2×20331300031002² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1161883 + ... + 6481710.

Almost surely, 2^{20331300031002} is an apocalyptic number.

20331300031002 is an abundant number, since it is smaller than the sum of its proper divisors (23720153899482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20331300031002 is a wasteful number, since it uses less digits than its factorization.

20331300031002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7791374 (or 7791371 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20331300031002 its reverse (20013000313302), we get a palindrome (40344300344304).

The spelling of 20331300031002 in words is "twenty trillion, three hundred thirty-one billion, three hundred million, thirty-one thousand, two".