20331332100031 has 16 divisors (see below), whose sum is σ = 21202179618816. Its totient is φ = 19479611962656.

The previous prime is 20331332100017. The next prime is 20331332100041. The reversal of 20331332100031 is 13000123313302.

It is a cyclic number.

It is not a de Polignac number, because 20331332100031 - 2¹¹ = 20331332097983 is a prime.

It is a super-2 number, since 2×20331332100031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331332099975 and 20331332100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331332100041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14714511 + ... + 16036816.

It is an arithmetic number, because the mean of its divisors is an integer number (1325136226176).

Almost surely, 2^{20331332100031} is an apocalyptic number.

20331332100031 is a deficient number, since it is larger than the sum of its proper divisors (870847518785).

20331332100031 is a wasteful number, since it uses less digits than its factorization.

20331332100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30751638.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 20331332100031 its reverse (13000123313302), we get a palindrome (33331455413333).

The spelling of 20331332100031 in words is "twenty trillion, three hundred thirty-one billion, three hundred thirty-two million, one hundred thousand, thirty-one".