20133331031 has 8 divisors (see below), whose sum is σ = 22165136400. Its totient is φ = 18135109440.

The previous prime is 20133331007. The next prime is 20133331039. The reversal of 20133331031 is 13013333102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20133331031 - 2⁶ = 20133330967 is a prime.

It is a super-2 number, since 2×20133331031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20133330994 and 20133331012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133331039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8394686 + ... + 8397083.

It is an arithmetic number, because the mean of its divisors is an integer number (2770642050).

Almost surely, 2^20133331031 is an apocalyptic number.

20133331031 is a deficient number, since it is larger than the sum of its proper divisors (2031805369).

20133331031 is a wasteful number, since it uses less digits than its factorization.

20133331031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16791889.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 20133331031 its reverse (13013333102), we get a palindrome (33146664133).

The spelling of 20133331031 in words is "twenty billion, one hundred thirty-three million, three hundred thirty-one thousand, thirty-one".