20620104431 has 2 divisors, whose sum is σ = 20620104432. Its totient is φ = 20620104430.

The previous prime is 20620104409. The next prime is 20620104443. The reversal of 20620104431 is 13440102602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20620104431 is a prime.

It is a super-2 number, since 2×20620104431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20620104397 and 20620104406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20620104481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10310052215 + 10310052216.

It is an arithmetic number, because the mean of its divisors is an integer number (10310052216).

Almost surely, 2^20620104431 is an apocalyptic number.

20620104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20620104431 is an equidigital number, since it uses as much as digits as its factorization.

20620104431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The spelling of 20620104431 in words is "twenty billion, six hundred twenty million, one hundred four thousand, four hundred thirty-one".