20413221235631 has 64 divisors (see below), whose sum is σ = 26426101063680. Its totient is φ = 15358877614080.

The previous prime is 20413221235559. The next prime is 20413221235639. The reversal of 20413221235631 is 13653212231402.

It is a de Polignac number, because none of the positive numbers 2^k-20413221235631 is a prime.

It is a super-2 number, since 2×20413221235631² (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 = 20413221235591 and 20413221235600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413221235639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58344191 + ... + 58693023.

It is an arithmetic number, because the mean of its divisors is an integer number (412907829120).

Almost surely, 2^{20413221235631} is an apocalyptic number.

20413221235631 is a deficient number, since it is larger than the sum of its proper divisors (6012879828049).

20413221235631 is a wasteful number, since it uses less digits than its factorization.

20413221235631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349464.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 20413221235631 in words is "twenty trillion, four hundred thirteen billion, two hundred twenty-one million, two hundred thirty-five thousand, six hundred thirty-one".